Computer based Opening theory

[hgm]

I think that with strong chess engines it does not happen often that
positions that after a minute analysis still scored as -1.4 would end up at +0.5 after 20 min.

But with the strongest mini-Shogi engines it is very common...

[carldaman]

this way, you'd get useful lines without the rather dubious 1. f3, 1.h4 stuff

Why these lines are doubious? Because all of us would never play such moves doesn't mean they are not a good start...

probably almost all: 1. e4, 1. d4, 1.c4, 1. Nf3, 1. g3, etc.
my guess is that the engines would mostly enter main lines of human opening theory
(Ruy Lopez, Queens Gambit, etc.)
and quite possibly play novelties or rarities once in awhile, thereby enhancing/enriching what we already know.

Engines will never give a pawn in the opening, so remove every gambit from the list....

Why do you think that engines will never play a gambit?

I think that you are wrong about it and engines can sacrifice for positional reasons.

For example many engines play after 1.e4 d5 2.exd5 not Qxd5 but Nf6

I've seen Stockfish play the Blumenfeld Gambit with Black many times, in games without book.