All scientists are moving forward only on the bases of all scientists before them. The only way we could ever come so far is by having huge understandings of complex things handed to us in the simplest of form by the work of millions of minds serving humanity. To be so lucky as to have this vast amount of info instilled into our basic knowledge as a natural phenomena of evolutionary thought processing, it's just profound and I am grateful to be gifted with the collective knowledge of millions of humans.