My point is not that what is old is antiquated. My point is that there were a tremendous number of constraints on the 140-year-old design of the typewriter-styl

My point is not that what is old is antiquated. My point is that there were a tremendous number of constraints on the 140-year-old design of the typewriter-style keyboard interface that simply do not exist today. Even if the typewriter's interface were optimal under those constraints it would be very unlikely that it would be optimal once those constraints were lifted.