I had a similar experience, another decade and a half back: I attended a Hypertext conference ~30 years ago, where he was doing demos. [...] From his comments,

I had a similar experience, another decade and a half back: I attended a Hypertext conference ~30 years ago, where he was doing demos. [...] From his comments, I got the distinct impression that he was disappointed and a little saddened that we had not progressed further than we have. :/ Reminds me of a retiring librarian, who went into aero/astro circa 1960, because they wanted to be part of humanity's exciting push out into the solar system... then watched their field stagnate for their entire professional career, and retired wishing they had done something else with their life. Hopefully AR/VR will shake up the collaborative tech space. It would be really sad to still be stuck around here for another decade or three.