Elon Musk and Larry Page's friendship was ended during a fight in 2015 over artificial intelligence. Page said that if consciousness and intelligence could be replicated in a machine, then machines taking over would simply be the next stage of evolution. Preferencing human consciousness over machine consciousness, Page claimed, was sentimental nonsense and "specist". Musk responded, “Well, yes, I am pro-human. I fucking like humanity, dude.”