I don't know he's credited with inventing the flatbed scanner and also what were probably the best music synthesizers of his time (which are still called Kurzwe

I don't know he's credited with inventing the flatbed scanner and also what were probably the best music synthesizers of his time (which are still called Kurzweil!). That seems pretty impressive. But this was all a long time ago, it could be he's been too many years in the writing/talks circuit and has become too rusty for practical engineering.