[zaroth]

I've started to see these fully split keyboards, and it makes me think, could people handle a keyboard which had two different home positions with two different keysets?

I'm imagining a left hand / right hand split qwerty, but nestled in the middle is the smaller steno board. Maybe that's crazy, but whatever the right design, there have got to be hobbyists out there who would build the prototype which you could feature.

Is that the right path? Building some kind of uber keyboard and a cute training game and trying to do it all at once? That's endorsing an almost YC approach, but it would certainly be fun if you're into that pace.

Good luck with the project! I think captioning is important, but will ultimately be replaced by software; giving the world a better way to input text universally is a very big idea. I don't think it's necessarily great for programming in today's languages, but I guess you have to think about this sort of thing on a wider time scale.