email first appeared in its early forms in the late 60s!

it didn't become common until the late 90s

and yeah, i remember the birth of hypertext... on my computer, back in 1989, the new Amiga OS 2 had this thing called "amigaguide" which was a form of hypertext document reader, and at my mother's university early versions of Mosaic (which was bought and became Explorer) appeared

in actual fact, the real real original birthplace of hypertext was the Plan 9 Acme editor, which started blurring the line between text editor, command shell and document reader... in Acme you could type in a command, highlight it, and middle click, i think it was, and then under this text would appear the output of the shell command invocation

and i'm pretty sure that the ideas of Acme still haven't fully percolated into UI design YET... and the main inventor of Acme was Rob Pike, one of the coauthors of Golang