Audio and video of Richard Feynman’s classic “There’s Plenty of Room at the Bottom” lecture (1959), which presented the vision of molecular nanotechnology for the first time, is available from Photosynthesis.com, an audio site. There are other archival recordings available, including complete audio and video from the 4th Foresight Conference on Molecular Nanotechnology, held in 1995. Apple Computer was a key sponsor of the conference.

Back then, it seems to me that a lot of people thought that molecular nanotech would be closer by now (I remember hearing people say “about 20 years”, so roughly 2015), but they were obviously wrong. My guess is that the innovation and economic activity in the tech sector around that time made them overoptimistic about progress in general.