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What about freelancers or telecommuters ; how should they dress when they do appear at the office or on a video-conference ? A new poet has appeared ; a new character approached us ; why should we refuse to eat bread , until we have found his regiment and section in our old army-files ? But even if you agree - and say if you do n't - what are we leaving out ; what have we overlooked ; where should our priorities be ? Questions to be considered are how can we determine the carrying capacity of the earth , assuming human beings collaborate ; what is the time scale in which we need to act ; where should decisions be made : locally , regionally , nationally , in groupings of nation-states or globally ; what approaches to decision making will be effective ; what do we need to learn in order to create sustainable societies ? Although objects of other types usually fit nicely in a designated return register , these do not ; where should the returned value be placed ? Our finite love and limited wisdom cannot understand it ; how should the finite comprehend the Infinite ? We do not hesitate to believe in the existence of love and beauty without anything more that our own personal experiences ; why should spiritual experiences be so different that we are all completely deluded into believing them ? They are paid from public funds ; why should the public not avail itself of their services ? Modeling the stockmarket as a stochastic process , i.e. viewing the stock prize as a solution of stochastic differential equations The Ito formula Derivation of the Black-Scholes equation Basics on difffusion equations Solution of the Black-Scholes equation Variation on Black-Scholes American options ; pricing ; when should one sell an American option ? Different crops require different soil pH levels for optimum performance ; when pH falls below these levels , performance may suffer ( Table 1 ) . For if our translators did not shrink from saying , " Non congregabo conventicula eorum de sanguinibus " ( I shall not assemble their assemblies of blood ) , because they felt that it was important for the sense to put a word here in the plural which in Latin is only used in the singular ; why should a teacher of godliness who is addressing an unlearned audience shrink from using " ossum " instead of " os " , if he fear that the latter might be taken not as the singular of " ossa " , but as the singular of " ora " , seeing that African ears have no quick perception of the shortness or length of vowels ? How do you select a sample ; what is participant observation ; should you use a postal or self-completion questionnaire or an interview schedule ; when should you use a quantitative approach ? I 'm curious , your background as ambassador to Nigeria and South Africa , both places where the work of democratization was very important , and presumably our foreign policy could help in that regard ; how should we be continuing those kind of efforts ? When does it make sense to exercise discretion ; when should relatively rigid rules govern behavior ? For instance , how to provide hard QoS and deliver added value SLAs ; which carrier-grade Ethernet OAM tools must be available ; how to manage the network end-to-end ; where should Ethernet start and where should it terminate in the network ; and network high availability and resiliency . It may not be that the Achaeans should mourn the dead with their bellies ; day by day men fall thick and threefold continually ; when should we have respite from our sorrow ? One would hardly think of building a house of any size without the aid of an architect ; why should not a city , in which the health , wealth , and happiness of millions are concerned ! Besides , sith on God as the most high all inferior causes in the world are dependent ; and the higher any cause is , the more it coveteth to impart virtue unto all things beneath it ; how should any kind of service we do or can do find greater acceptance than prayer , which sheweth our concurrence with him in desiring that wherewith his very nature doth most delight ? I decided to see how the tool would handle a common scenario : Suppose I came away from a doctor 's visit with a prescription for Prozac ; where should I buy the drug and how much would I end up paying ? Now the new cathedral had gone the way of the old ; how should cathedral number three be built ?