I believe that in order to think, there must be something visible, something that can be thought deeply, but it is a little difficult to reach the right conclusion, but many times a lot of solutions can be found from thinking .anyway thanks for share your thoughts .
Good point. I think that sometimes we take what others tell us and adopt that as our perfect answer, when we don't really know for sure. It's better to find out things for ourselves and gain real knowledge, and also to stay up to date on the knowledge we do have.