Computer's reasoning function

Reasoning function is the most difficult stage for computer so that it gets much closer to humanlike behavior.Though it may seem strange but almost all complicated requirement of programming can be achieved only by its three basic functions;proceeding,branching and repeating.However,they may not be enough for another advanced function like reasoning as you can easily imagine.As far as I learned through related website,this complicated order can be done by magical combination of induction and deduction that eliminates unnecessary candidates from several possibilities.I hope computer and human would become more advance in the future by stimilating each other.