If you think everything has its own reason ?If no,it meaned that the world hasn't it's own exist-rules,easily to see, it's a problem .If yes,it meaned that we can find some rules to explain everything,include why we can think deeply. If we can find the reason why we can think ,we can creat a "human" that can think itself .Now,problem comes here once more ,are we humans special?Maybe what we think only what the world let us to think.