It is believed that our choice is determined by knowledge of the situation and conditions. But in fact the opposite - only ignorance gives us the opportunity to choose. And to be precise - to guess ..

The thing is that people are literally programmed to cause myself good (in his everyday life, material and selfish sense). This is expressed in the desire to get the maximum pleasure and avoid "whipping". Knowing all the conditions and circumstances it is doomed to "select" the best option *. But if the situation is not clear, it starts the "finger pointing to the sky," trial and error, which we take to be the choice.

* The ultimate example is mentally healthy, adequate, sober man standing on the roof of high-rise buildings. He simply doomed to not jump.