> "Ghosts? Do you believe ghosts in 2015?", no really, what do we know about ghosts not existing, in 2015 that we don't know in 1900? https://xkcd.com/1235/ ht

> "Ghosts? Do you believe ghosts in 2015?", no really, what do we know about ghosts not existing, in 2015 that we don't know in 1900? https://xkcd.com/1235/ https://xkcd.com/1235/