Ted Nelson (you can look him up on Wikipedia) tells a story where he's explaining hypertext to Robert Heinlein in the 70s, and Heinlein says "So it's like The S

Ted Nelson (you can look him up on Wikipedia) tells a story where he's explaining hypertext to Robert Heinlein in the 70s, and Heinlein says "So it's like The Source?" (which is an early AOL).