Why are ethics in sex research important Essay Example | Topics and Well Written Essays - 500 words

Why are ethics in sex research important - Essay Example For example, confidentiality is a key issue in sex research and it is enhanced when ethics are observed during the data collection process (McLaughlin 69). Ethics in sex research also help in gaining the support of the public for the research being conducted. Ethical behavior ensures that researchers observe integrity and conduct high quality research, as a result of which the public can fund such an initiative since it is being conducted with adherence to the set standards. Adherence to ethics in sex research is also important since it contributes to the promotion of social and moral values. While conducting sex research, it is essential to respect human rights, observe the law, as well as be socially responsible. In addition, it is important to ensure that the health and safety of the subjects being used in the research are guaranteed. When there are ethical lapses during sex research, the human subjects taking part in the research will be harmed and this is morally wrong (Ritzer and Ryan 546). Ethics in research are also vital since they help researchers to avoid discriminating their subjects. As an ethical obligation, researchers should treat all subjects equally and avoid discriminating some subjects when conducting research. Observing the code of ethics is also crucial in sex research since it enables researchers to abide by the law. Moreover, adherence to norms of research is an indication that the researchers are competent and the research results are valid and reliable. Respect for ethics is a prerequisite for professionalism and competence when conducting research. When researchers observe ethics during sex research, they manage to respect the dignity of humans, autonomy, as well as privacy of the subjects involved in research. In addition, ethical conduct enables researchers to take the necessary precautions, especially when dealing with vulnerable subjects (McLaughlin 70) When conducting sex research, there are a number of

WGS 2 Assignment Example | Topics and Well Written Essays - 250 words

WGS 2 - Assignment Example It is quite pivotal to understand that American political movements were key catalyst to channel social reform as well1. In the modern day, women are independent and have the liberty to work in corporate American. Additionally, the website discusses the intricacies of social issues that plague women. Equal pay is one of the major focal points that was heavily discussed. One of the key things that worries me is domestic violence is another issue that is depicted as a challenge for women who are seeking to have a better life. The website discusses many challenges that women face of domestic violence in their respective home, which does draw a paradigm. The idea of gender disparity in school, government and overall progression of women is clearly hindered in these cultures. . Cultures adhere to gender roles because they assign responsibilities to each gender based on family needs. For example, women in eastern cultures have to follow the cult of domesticity. I think this is a major issue as assimilation of women migration is an interesting point to

Interest Rates Affects on the Is-Lm Model Essay Example for Free

Interest Rates Affects on the Is-Lm Model Essay Assignment 4 5. According to the IS-LM model, what happens to the interest rate, income, consumption and invest under the following circumstances. a. The central bank increases money supply. An increase in the money supple shifts the LM curve downward. The equilibrium moves from point A to point B. Income rises from Y1 to Y2 and the interest rate falls from r1 to r2. Therefore this increase in money supply causes a decrease in interest rate, an increase in income, an increase in consumption and an increase in investment. LM Income, output, Y b. Government increases government purchases An increase in government purchases result in a shift in the IS curve to the right. The equilibrium moves from point A to point B. Income rises from Y1 to Y2 and interest rate rises from r1 to r2. This increase in government purchases therefore causes interest rate to rise and income also rises. Consumption will also increase but the increase in government purchases will cause investment to decrease. interest rate, r LM IS2 IS1 Income, output, Y c. The government increases taxes. An increase in taxes shifts the IS curve to the left. The equilibrium moves from point A to point B. Income falls from Y1 to Y2 and the interest rate from r ¬1 to r 2. Therefore increase in taxes will bring about a decrease in interest rate, cause income to also decrease which will decrease consumption also but will result in an increase in investment. interest rate, r LM IS1 IS2 Income, output, Y d. The government increase government purchases and taxes equally 6. Consider the following economy of Hicksonia. a. The consumption function is given by C= 200 + 0. 75 (Y T) The investment function is I= 200-25r Government purchases and taxes are both 100.

The first sin and its punishment

The first sin and its punishment The First Sin and Its Punishment Now the serpent was more crafty than any other wild animal that the Lord God had made. He said to the woman, Did God say, You shall not eat from any tree in the garden? 2 The woman said to the serpent, We may eat of the fruit of the trees in the garden; 3but God said, You shall not eat of the fruit of the tree that is in the middle of the garden, nor shall you touch it, or you shall die. 4 But the serpent said to the woman, You will not die; 5 for God knows that when you eat of it your eyes will be opened, and you will be like God, knowing good and evil. 6 So when the woman saw that the tree was good for food, and that it was a delight to the eyes, and that the tree was to be desired to make one wise, she took of its fruit and ate; and she also gave some to her husband, who was with her, and he ate. 7 Then the eyes of both were opened, and they knew that they were naked; and they sewed fig leaves together and made loincloths for themselves. [1] The book of Genesis is one part in an anthology of materials that have been put together over a considerable period of time. Pertaining to be part of a diverse oral tradition, it does not, according to Burnette-Bletsch, have any singular authorship.[2] The book of Genesis is known as the primeval history, as it is believed to be expressive of a time before, there were any recorded histories. As a result, these histories were often recorded at much later stages[3] However, there are some parallels with Ancient near Eastern literature which contradict this statement. As a result, this debate will, in all probability remain sterile. Regardless of the debate, Genesis is deemed to be an historical book. However, not in the modern sense, it is history with a purpose. It is a collection of instructional, educational, and religious material. The very fact that this tradition had been passed down through the generations, may even have led to omissions of material, however, this should not be viewed by the modern academic as a setback.[4] One must also take into account the fact that many people will not all share the same viewpoint. In this respect Biblical narratives are often a complex mix of sources, genres and interpretation, both in their written and oral formats.[5] Known as mosaic authorship the traditional Jewish and Christian belief denotes that the first five books of the Old Testament were Gods inspirational words which were written down by Moses. P J Wiseman somewhat supports this theory, however, he cites Moses as the redactor rather than its author. He also states that there are several clues within Genesis which reveal how it was written. He refers to the toledots or genealogies in Genesis and draws attention to the colophons, believing them to be a specific symbol of authorship. Thus, concluding that the people that are actually named, (Adam, Noah, Shem et al), were the ones who wrote on the clay tablets in cuneiform, therefore, making them the true authors. Moses, subsequently, as a result of his Egyptian influences, just brought together and edited this work from the tablets.[6] However, more liberal theologians generally accept the Wellhausen theory, or documentary hypothesis which asserts that Genesis and the remaining Pentateuch was written by a group of authors, from diverse locations throughout Palestine, over a substantial period of time. The theory is that these books were redacted or compiled from the texts of pre-existing documents. Within this theory there is also the belief that each author wrote with their own particular style. This effectively meant that the mosaic element contained many layers of material which overlapped in some places. These writers are also believed to have had both their own styles and narratives. For example the J writer, wrote with affection for the Hebrew name for God (YAHWH). The E writer alternatively favoured the divine name Elohim. Whilst the D and P documents were names for the Deuteronomic and Priestly writers.[7] The J, E and P authors are believed to overlap in the book of Genesis, which consequently gives both c omplementary and contrasting elements to the understanding of some of Genesiss abstract concepts. However, it is with critical consensus that the J writer is believed to have edited Genesis 3:1-7.[8] In contrast Wenham cites Rendtorff, in that he has challenged the mosaic theory by stating the heterogeneous nature of material in Genesis cannot be ascribed to J.[9] Indeed, who and to what writer, wrote which parts, still remains a contentious issue within theological debates today Some scholars, such as Freidman and Bloom, have also gone so far as to suggest and imply that the J writer was also a female. Bloom especially exploits the fact that she may have been someone who had access to royalty, perhaps the daughter of Solomon, Rehoboams sister. This would fit with the general consensus that J had royal connections and wrote during the tenth century BCE. However, Bloom argues that Rehoboam (922-915) was the king at that time, not David (1000-961), or Solomon. (961-922).[10] The importance of this is that the kingdom under Rehoboam was experiencing internal unrest and rebellion. This was a stark contrast to the kingdom under the reign of David and Solomon.[11] Similarly another interesting point is made by Alicia Ostriker on Blooms feminist perspective. She compares the male characters in The Iliad, The Odyssey, and the Gilgamesh with the stories of Abraham, Isaac, Jacob, Joseph, and Moses. In comparison she asserts that the biblical ancestors were family men who initiated negotiation and deflected potentially dangerous situations. Whereas, the characters in the above texts were warriors and fighters, this alone may make a case for the survival of a female perspective within the overwhelmingly male dominated traits contained within the Hebrew bible.[12] The book of Genesis covers the largest time period than any of the other books. It covers the periods from creation, up to the time when the Israelites arrived in Egypt and grew into a nation. The literary structure of Genesis is built around eleven separate units. Beginning with the creation and the origins of the universe, through to the early history of the Israelites.[13] This proprietary text also gives and puts the biblical patriarchs into a creation framework. Originally written in Hebrew the title bereshit translates to in the beginning and is a translation of the Hebrew word toledot. [14] As a result Genesis is a history of origins, births, genealogies, and generations. The primary intent of Genesis one to eleven is focused around the parables. These cover the two creation stories, the Fall, Cain and Abel, The Flood and the Tower of Babel.[15] These myths centre upon deep philosophical meaning as opposed to fable or mere legend. They are also far removed from scientific theory. Indeed, the parables of Genesis with its poetic imagery and symbolism must be read, according to Richardson, as poetry and not as prose. In this context, Adam, Eve and the serpent should be viewed as poetical, religious figures, and not as real individuals.[16] Genesis 3: 1-7 has been the subject of many theories and interpretations between scholars alike. It is taken by many as an explanation of original sin. However, the word sin never occurs. Disobedience and its consequences, however, do occur. Phyllis Trible sees Genesis chapter two and three as A love story gone awry. She identifies that the plot is simple and uncomplicated. However, she also believes it to be full of uncertainty and plurality. She identifies that some may interpret Adam as superior to Eve and be both dependant and worthy, of the description troublemaker. However, Trible also notes that Adam remained silent in this text, a sign of his passive weakness perhaps.[17] Schungel-Strauman believes that no gender can claim dominance over the other, as the author of Genesis clearly provided a male and a female, evident in Genesis 1:.26-28.[18] Richardson expresses the view that the serpent within the text is a personification of temptation and should not be thought of as external to that of human nature. However, the J writer does not attempt to answer the philosophical question of where and how evil came into the world, he just tries to portray humanity. For example, the serpent may appeal to ones vanity and may suggest that Gods goodness can be emulated.[19] The serpent appears to be impersonal towards God as he refers to him as God and not Lord God. This bold rhetoric may be a direct challenge on his divinity.[20]As a result this challenge introduces a sense of unease into the text and is possibly a preamble of manipulation and trickery, is thus, imposed upon the reader. However, in contrast the serpent asked Eve an inquisitive, innocent question. Did God say, You shall not eat from any tree in the garden? This could imply that it was God himself speaking.[21] There is also the question of how did the serpent know firstly that God had spoken and secondly, what God had instructed. This could again imply that that the serpent was indeed manipulative and had an ultimate objective. A common interpretation is that the serpent is identifiable as either Satan or the devil. However, the serpent in ancient times was a symbolic figure, prominent and adored around ancient Egypt, Babylon, and Palestine. There was also an opinion that the serpent was intrinsically wise. Indeed, they often guarded the doorways of Egyptian Tombs, which symbolically, represented the mansions of heaven. They were also kept in temples and in the tombs of Kings.[22] To some, the serpent was also seen as a religious emblem, phallic in nature, it was connected to life, especially everlasting, or continuing. This would fit with the theme of both lineage and fertility of beginnings, evident within the book of Genesis. Next the focus appears to be on Eve the woman. Eve begins a dialogue with the serpent and explains both the instruction and consequence of disobeying Gods word. Eve uses the word God just as the serpent had, which possibly could indicate that she felt it was a somewhat harsh command.[23] The fact that the fruit could not be touched or eaten denotes that the action of disobedience would result in death. This could be taken literally, given the fact that both Adam and Eve had not previously touched these items. However, when the serpent answers you will not die and God knows what will happen, implies that God knew that they were going to both disobey and become enlightened in some way. Death therefore, may not have meant physical death but an ending of another sort. Your eyes will be opened, could be where crafty, the description of the serpent fits, or it could be where a bilateral view of good and evil in the world becomes evident to man. In so much as God had decreed a death sentenc e and the serpent had predicted increased knowledge.[24] However, Eve choose to ignore Gods instruction and take those of a crafty serpent, lured by his promise of liberation, freedom and knowledge, rather than the consequences of death. Yet in her ignorance, disobedience and doubt become parallel processes in so much as, when we obey God we fail to assert ourselves. This failure can then cause doubt and consequently, disobedience. Thus, when the serpent suggests that God did not forbid the eating of the fruit, it may have signified Gods divinity or his concern for humanity. Comparatively, human assertion may have highlighted the need for them to be the central figures, and not God. As a result, this rebellion may have signified human pride, which in turn led to sin, and equated to them wanting a parallel and equality with God.[25] Eve again is the central figure in Genesis 3: 6 and rather than be under the guidance of God, she possibly tries to assert her independence. One interpretation comes from Clare Amos, who believes that this verse is a metaphor for the maturity of both society and human beings. She suggests that Paul in (Rom7.7-12) also supports this theory. She further highlights the idea by explaining that the use of the adjectives, pleasing and desirable draw upon the idea of sexual maturity .Indeed, under the guidance of the serpent, a phallic symbol, the bodys senses became more obvious. When the eyes of both were opened, and they knew that they were naked; and they sewed fig leaves together and made loincloths for themselves. Amos, attributes this as a representation of them leaving an immature state of mind and thus, conforming to the constraints of society.[26] As in non biblical primeval narratives, clothing was a mark of civilisation.[27] In conclusion, Genesis 3 is the prologue to mans salvation, resulting from man disobedience towards God, However, it should not be read literally, but in context to ones own understanding. It serves as a theoretical text for the universal question of disobedience. However, it culminates in God not destroying man, but preserving his life. This redemption consequently sets him on a path towards salvation.[28] The book of Genesis is that path as it portrays a concept of human conduct, which both illustrates and illuminates our choices. It offers both subtle guidance and regulations and deals effectively and metaphorically with the possible consequences of noncompliance. Regulation is the backbone of any society, it cannot exist effectively without some controls. As a result the book of Genesis served as an interactive narrative that highlighted these issues and that in turn united the ancient societies. [1] Coogan, Michael, D, (ed), The New Oxford Annotated Bible with the Apocrypha 3rd Edition NRSV, (Oxford, 2007).pp.14-15 [2] Burnette- Bletsch, Rhonda, Studying The Old Testament, (Abingdon Press, U.S, 2007).p.8 [3] Ibid, p.125 [4] Vawter, Bruce, A Path Through Genesis, (London, 1957).p.21 [5] Edward L. Greenstein, The Formation of the Biblical Narrative Corpus AJS Review, Vol. 15, No. 2 (Autumn, 1990), p.162 [6] http://www.british-israel.ca/Genesis.htm [7] Vawter, Bruce, A Path Through Genesis, (London, 1957).p.23 [8] Speiser,E,A, The Anchor Bible Series, Genesis, (New York, 1964). p. XXVII [9] Wenham, Gordon, J, World Biblical Commentary, Genesis 1-15, (Nelson word Pub Group, 1987). p.xxix [10] Phyllis Trible The Bible in Bloom The Iowa Review, Vol. 21, No. 3 (Fall, 1991), pp.21-22 [11]Hill, A, Walton J, H, A Survey Of The Old Testament 2nd Ed, (Grand Rapids Zondervan, 2000). p.157 [12] Alicia Ostriker, The Book of J The Iowa Review, Vol. 21, No. 3 (Fall, 1991), p.16 [13] Speiser, The Anchor Bible Series, Genesis, p. LV [14] Burnette- Bletsch, Studying The Old Testament, p.25 [15] Richardson, Genesis 1-11, p.27 [16] Ibid, p.30 [17] Trible, Phyllis, God And The Rhetoric Of Sexuality, (Philadelphia, Fortress Press, 1978). p 72 [18] Brenner, Athalya, (ed), A Feminist Companion To Genesis, (Sheffield, Sheffield Academic Press, 1993).p.75 [19] Richardson, Alan, Genesis 1-11, (Torch Bible series, London, 1953).p.71 [20] Burnette- Bletsch, Studying The Old Testament, p.30 [21] Wenham, World Biblical Commentary, Genesis 1-15, p.88 [22] W. G. Moorehead, Universality of Serpent-Worship, The Old Testament Student, Vol. 4, No. 5 (Jan., 1885), p.207 [23] Wenham, World Biblical Commentary, Genesis 1-15, p.88 [24] Burnette- Bletsch, Studying The Old Testament, p.30 [25] Richardson, Genesis 1-11, p72 [26] Amos, Clare, The Book Of Genesis, (Peterborough, Epworth Press, 2004).p.23 [27] Coogan, Michael, D, The New Oxford Annotated Bible with the Apocrypha, p15 [28] Richardson, Alan, Genesis 1-11, p.79

Viral Hemorrhagic Fever :: science

Viral Hemorrhagic Fever How would you like it if you died? Well that’s what’s happening to people in Africa. Their families die around them, spreading the deadly disease further into the ecosystem. Killing at will, this potent filovirus sweeps through villages with reckless abandon, destroying anything and everything in it’s way, and then just as mysteriously as it came, it disappears without a trace. Even with our modern technologies, we still don’t really know too much about this death sentence disguised as a virus. In the following, I will do my best to teach you about Ebola, its cousins, where it’s from, possible cures, effects, and so on. If we want to, we can find a cure. We control our destiny, and it’s up to us to find an anecdote to this killing machine. The Ebola virus is a highly contagious filovirus that can be transmitted by re-use of unsterilized syringes, needles, and directly transferring it by contact of bodily fluids that contain high levels, or "bricks" of virus. Aerosol transmission cannot be counted out, but water vapor containing secretions of Ebola are known to spread the infection. Seeing that Ebola can be spread in numerous ways, including being spread from animal to human, and visa-versa, monkey handlers who work with Ebola ridden monkeys have broken out with the infamous hemorragic fever. The animal-to-human spread of the virus has also killed off African tribes that eat animals with high titers of the deadly virus. Ebola is an infectious disease of many faces. It has strains, such as Mayinga, or Cardinal, which are mainly named after people, or places that they are discovered in. Strains are slightly different versions of a certain virus. Ebola’s three types that are known are: Ebola Zaire, Ebola Sudan, and Ebola Reston. Ebola Zaire was first discovered in 1976 in Zaire. It is the deadliest disease of all of the Ebola strains with a 9 out of 10 kill rate (see fig. 1-1). Ebola Sudan kills over 1/2 of the people it comes in contact with. It was discovered in 1976 also. Ebola Reston was named after Reston, Virginia, which had a shipment of cynomolgus macaques, a type of monkey, infect a whole monkey house with Ebola. Ebola Reston has never killed anyone, but it killed 80% of the monkeys that it devastated. Ebola also has a very close cousin, Marburg. Under an electron microscope, they are clearly filoviradae.

Life in the Colombian Cocain Trade Essay -- essays research papers

Colombian Cocaine Trade Cocaine is produced from the Coca plants usually found in the mountain climates of Colombia. The first cocaine alkaloid was not achieved until 1855. The cocaine alkaloid was first isolated by a German Chemist Friedrick Gaedcke. Cocaine was first used in the 1880’s as an anesthetic in eye, nose, and throat surgeries because of its capability to provide anesthesia as well as to constrict blood vessels and limit bleeding. Its therapeutic applications are obsolete in this day and age because of the technological advances to produce safer drugs . Cocaine is the most devastating and potent stimulant of the natural realm. In this paper I will be discussing the history of cocaine, the impact in the world, and lastly the War on Drugs. Dating back thousands of years the South American Indigenous people have chewed the coca leaf. The leaf contains important nutrients and can be life saving to a person who hasn’t eaten for days. When the Spaniards conquered South America they discovered that the claims of the leaf being nutritious were true and started taxing 10% of the value of the crop . The taxes actually became the main source of support for the Roman Catholic Church in the region. In 1999, Colombia remained the world's leading producer of cocaine. Three quarters of the world's annual yield of cocaine is produced there. In the year 2000, Columbia still remains the world's leading producer of the drug .   Ã‚  Ã‚  Ã‚  Ã‚  The coca cultivation that goes on in the Andean jungle is damaging the health of the environment in the region. The main threats to the environment are deforestation caused by clearing the fields for cultivation, soil erosion caused by several factors, and chemical pollution from insecticides and fertilizers. The process of mixing coca and poppy into cocaine and heroine has devastating effects on the environment as well. These environmental issues are difficult to address due to coca being a traditional crop and trade item, the influence and wealth of the drug traffickers opposing restrictions, and the issue of national sovereignty. Most realize the social impact of the drug trade worldwide, but few realize the environmental impact. The natives who used to live on eating the fish from the rivers no longer are able to find any edible fish.   Ã‚  Ã‚  Ã‚  Ã‚     Ã‚  Ã‚  Ã‚  Ã‚  Polluti... ... and a peasant. Escobar started his legacy of being a notorious ruthless cocaine distributor in the 1970’s. By the 1980’s Escobar’s cartel was responsible for over 80% of the worlds cocaine productivity. Between 1984 & 1987, fifteen judges and numerous other governmental figures were assassinated in streets of Medellin. By 1993 credited with killing more than 200 judges, an attorney general, three presidential candidates, estimated 1000 police officers, dozens of journalists, and thirty kidnappings. Escobar's killing in December 1993 ended a long terror campaign that shook Colombia to its core. The drug lord's gang set off bombs, downed an airliner and killed dozens of police officers and officials to coerce the government to not extradite drug suspects to the United States. The United States for some time has been helping Columbia with military aid, including training and intelligence gathering. Special units from the military, CIA, FBI, DEA, and half dozen other agencies, in conjunction special units of the Columbian police , were all responsible for the take down of Pablo Escobar and friends. This was also labeled one of the greatest take downs in the history of Colombia.

Critical path method, Knowledge, Management Essay

The traditional project cycle MacAthur’s project sequence model The participatory project management cycle Then discuss which one of them is best suited to ensure that learning takes place and that project planning improved. According to Cusworth and Franks (1993:3) a project is the investment of capital in a time bound intervention to create productive assets. Capital will be referring to both human resources and physical resources and the productive refers to the outputs or end results of the project. A project can refer to vast array of development initiatives, ranging those designed to enhance through project intended to establish new organizational forms and sets of procedures ,for instance for delivering health care more efficiently ,to project takes place over a particular time (time-bound ),it is intended to achieve a specific objective or set of objectives .There is two broad approaches to project planning namely directive (linear) interactive learning process The traditional project cycle is the directive project cycle ,and is sometimes called the blueprint planning. Detailed plans are drawn up in advance and implementation occurs in a linear ,sequential fashion .Project decisions taken during design and implementation are relatively pure and can be made into terms of a few controllable variables ,usually of a quantitative nature. The traditional project cycle is based on that assumption and does not easily accommodate any deviations. Deviations such as scope change request can cause major upheavals in the project schedule. The project planning and management is viewed as a cyclic process. The advantage of this model is that it provides for a number of phases designed in such a way as to link the formulation of basic policy guidelines to specific projects and programmes . The project cycle is the framework used by the world bank to design ,prepare ,implement and supervise projects.In practice ,the Word bank and the borrowing country work closely through out the project cycle although they have different roles and responsibilities .Generally the d uration of the project cycle is long by commercial standards. MacAthur’s  project sequence model also as interactive learning process. MacAthur sees his project sequence as an improvement on the typical cyclic model since it shows that this is genuine attempt to reflect reality ,not not just a simplified academic model. MacAthur’s project sequence model is characteristics of projects ,namely that it normally requires considerable funding (investment ). This financial commitment is important ,and may come from within a country. The sequence cycle emphasis is on the individual project and not on the general process. Project sequence model on the role of the local is assumed and one of the project goals is to discover what to do in the environment .New learning is seen as essential to success , meaning is developed within the local context not imposed from outside .Objectives and strategies emerge from on-site investigation . Resources ,activities and timetables are adjusted as experience is gained . Design decisions are experimental and dynamic . Modification occurs as learning takes place . Participatory project management cycle is used to work in a result-oriented and participatory way. With this approach the life span of projects or programmes is divided into various phases which together form the project cycle analysis , planning ,implementation ,monitoring ,evaluation and adjustment. Some organizations want to integrate project cycle management into their activities to meet external (donor) requirements. Others are looking for a new way of getting intended beneficiaries partners and their own personnel more involve in project management through participating and increased ownership. Project participatory management (PPM) is constantly involving . in collaboration with its clients .development in the use of project participatory management project contributes to its innovation . The knowledge acquired during this process is made to other interested parties . MacArthur’s project sequence cycle is best suited to ensure learning place and that project planning is improved .Interactive planning is based on the premise of uncertainty ,the likely hood that conditions ,problems and solutions are not completely known to the outset knowledge must be obtained as the project proceeds and appropriate modifications made on the basis of this learning ,planning project decisions are often impure and made in terms of shifting and often qualitative factors , by doing so it will give room to learning from the past projects and it will improve the project.