When do you remember this from? In the mid 1970's, computers playing chess had in 20 years gone from being utterly trivial to beat if you know the rules, to ea

When do you remember this from? In the mid 1970's, computers playing chess had in 20 years gone from being utterly trivial to beat if you know the rules, to easily beating amateurs and playing mildly interesting games against top humans like Greenblatt vs Bobby Fischer in '77. And it was clear that the power of the chess computers would keep scaling with Moore's law as they could look further into the future and store more of a complete opening book. In the late 80's the first versions of Deep Blue were playing serious games against Kasparov under standard time control, even though it took until 1997 to beat him - one can argue that Kasparov was also still developing during this time, since his rating peaked in 1999. Can you find a citation from after 1980 from someone with a bit of understanding of chess and computers, saying that computers would never beat humans?