I was just wondering they say that science are perfect. How come that they cant give a pure answers to some issues to like why do people dream? They say that it is on the psychological effect but it is not certain
Why is that there are left handed persons? Any thoughts about this?
That is because science is vast. There are numerous unanswered question in the world. Science focuses on more "important" unanswered question than those that couldn't help humanity. The aim is to explain and contribute, not just explain answer from whichever question comes first. It needs deep studies, research to be precise. Science is perfect on explaining things, but science is not perfect on answering all the questions each person have.