Just something that popped up coming back from the store. I'm going to break it into 2 parts.
Humans like other mammals are given instincts. I'm not sure about other animals, but we have the ability to control our instincts (to a certain extent). Given the modern situation of society, a lot of our instincts lay dormant at most times. The grocery store takes away the hunter in us, so to speak. So, is Zen a evolution? Through not being able to act out our instincts, man has found the need to search elsewhere for contentment. Usually a male's present day hunting situation requires him to fix computers, translate text, or present marketing strategies etc. As a result there is a dissatisfaction through out their existence, and an imbalance. These instincts seem to be tools that we once used, yet now they are obsolete most of the time.
From our experiences throughout our life we are exposed to many situations, and results. We see our mother cutting bread with a knife and see that the result is a slice of bread, so from then on we presume that if we cut the bread with a knife it will produce a slice. Seeing a large bolder about to fall on a car, we have an understanding that the car will be crushed. So coupled with our instincts these experiences and presumptions cause us to act or react in a certain situation. Preventing this action could be said as being an inhuman act. The wisdom lies in the ability to see our presumptions of reaction/action and react to the situation in the appropriate manner understanding that the outcome is uncertain, but not hindering our instincts.