The world, and when I say "the world", I actually mean humans in the most physical sense, is not programmed for all cases, at least this is what comes to mind as an afterthought after reading part of a book called "SWAY - The irresistible pull of irrational behavior". In short this book deals with the -we would like to think- rare irrational behavior of people in a variety of cases.
Something that caught my attention was an empirical study that showed that people react more to something worse than they do to something equally better, in this case it was egg prices, and the result was that people bought less eggs when the price increased than less eggs when the price equally decreased.
As I recalled this while answering trivial undergraduate students question at a class mailing list, I thought that the outcome of this type of studies could not possibly be defined beforehand by the way the human body or mind is shaped through evolution, It weirdly or not brings to mind something I heard in a movie sometime that went like "behind every blade of grass there is an angel that whispers 'grow, grow' to it".
Maybe I don't have a point to prove, or even a concrete one to show you, future reader, or more likely, future me, but when designing a system you can design it by stating its behavior for any given input, but the above kind of study shows how complex it is to design this world. I think that besides my hidden faith in determinism, for which I have not yet written anything, but soon will, nature plays it by ear when it comes to the outcome of this kind of studies.
PS: Even if there is a god and he designed us all from scratch, configuring the outcome of such studies would be too much work, even for a God. :)
PS2: I also thought of something else to write, but I forgot, It must have been a lie! Or maybe I will add it later.
