200 free science fiction books available on Project Gutenberg (Reddit/r/FreeEBOOKS)
Is the transporter on Star Trek a nifty sci-fi transportation mechanism? Or is it a sinister murder machine, killing the person who steps on the platform and spitting out a duplicate on the other end?
Start watching for the geeky fanwankery, stay for the meaty speculation about an astounding philosophical problem: The problem of consciousness. Everybody has consciousness, but nobody knows what consciousness is. You can’t prove that anybody other than you is conscious, and you can’t prove to anybody else that you’re conscious.
This is another in a series of wonderful CGP Grey video.