Bill Buxton used to have an outstanding hour+ video called What if Leopold Didn’t Have a Piano? online. Sadly, it's gone. There is still a short PDF that outl

Bill Buxton used to have an outstanding hour+ video called What if Leopold Didn’t Have a Piano? online. Sadly, it's gone. There is still a short PDF that outlines a few of the same ideas, though: http://www.billbuxton.com/leopold.pdf http://www.billbuxton.com/leopold.pdf