[klodolph]

THAC0 didn't come around until 2e, 1e had hit tables. You can see them on p. 74 of the AD&D DMG, with some more notes on p. 82.

[racer-v]

You can get rid of THAC0 if you just use this simple rule: roll d20, add the opponent's armor class (plus your own to-hit bonus if any), and a result of 20 or better is a hit.

[dragonwriter]

That's true; it's easy to forget that THAC0 was a simplification from 1e.

Though that kind of reinforces the point.

[dmoy]

Yea the salient point there was the second part - whether it be hit tables or THAC0, 5e rules would expedite play.

Course some of us will sit there and say y'all should just be playing 3d6 instead, but I digress...

[Steko]

Actually it was introduced before 2e but wasn't a core system in 1e.