More of us may be affected by variant hormone levels than we realize.

Philiosophers like Hume and Descartes and Hobbes saw things similarly. They thought that mental images and ideas were actually the same thing. There are those today that dispute that, and lots of debates about how the mind works, but for me it's simple: Mental images, for most of us, are central in inventive and creative thinking.

Elon Musk is talking about silicon nanoparticles pulsing through our veins to make us sort of semi-cyborg computers. But why not take a noninvasive approach? I've been working and trying to think and invent a way to do this for a number of years and finally happened upon it and left Facebook to do it.

Could you imagine if we could leapfrog language and communicate directly with human thought? What would we be capable of then? And how will we learn to deal with the truths of unfiltered human thought? You think the Internet was big. These are huge questions.

I have decided to leave Facebook and Oculus to work on curing diseases using some new imaging technologies I've been incubating for awhile.

I worked as an artist, played in a band, met Andy Warhol, Christo, Lou Reed, and David Byrne. I had fun.