Forgive me if I have already mentioned this, but I got to know Ted a little in the period immediately after TiddlyWiki’s release, 2005 to 2010.
I first met Ted at some long forgotten unconference. Afterwards he emailed me to say “good to meet you” under the title “What you can teach me”. He said “your stuff at Tiddlywiki looks very Xanadesque If I only understood it.”
We went on to meet up a few times – he was based in the UK at Oxford at the time (this was long before I moved here). Obviously, we talked about Xanadu and TiddlyWiki, perhaps best characterised as exploring our daydreams together.
It was a privilege to meet him, and I found our conversations encouraging and inspiring in terms of what I wanted to do with TiddlyWiki.
He has always come across as a genius and visionary, and consequently, has probably been misunderstood a lot.
I’m a proud owner of his self-published autobiography, which is the most enjoyable such book I’ve ever read. It is written in a quasi-hypermedia way with lots of asides and careful typesetting, though as he says upfront, it is a small fraction of what it could be if Xanadu had come to fruition and enabled many more parallel texts/documents to be there. It is well worth your money & time!
I would think that within a tiddlywiki itself that true hypertext has been realised, not across the whole human corpus though.
Some research I have being doing on relationships in TiddlyWiki suggest to be we can stand on the shoulders of Ted Nelson by making one way links look like two way links, and allow a progressive accumulation of knowledge through allowing an incremental movement between little information allowing a lot of missing information, then programmatically identifying and building on the gaps.