Tony wrote:
Actually, I've neer heard of him.
He invented hypertext in 1963. (Or at least hypertext in a recognizable
"modern" form; Vannevar Bush arguably may have invented hypertext in
1945.) Although Nelson built a hypertext system in the 1960s (as did
Doug Engelbart), and various other small-scale systems were built over
the next few decades, it generally took the world until the 1990s to
catch up. Nelson would claim that we actually still haven't caught up,
because HTML has many serious deficiencies compared to what he invented.
Nelson is also famous for writing _Computer Lib/Dream Machines_.