I have played AD&D with plenty of newbies, but I never found any problems with negative AC...Sorry, but negative AC/Thac0 was one of the biggest barriers to play for new players or casuals, and its removal is NOT lamented by me.
Nothing worse than having to ::gasp:: subtract.
I hate anti-THAC0-ism, as if adding is objectively superior to [/i] subtraction or, heavens forbid, charts.
Well, as a 11 year old with my very first Basic D&D box set, figuring out THAC0 was enough of an impediment to learning the game that I put up the box and waited another 8 years until I was in college to try D&D..
Which Basic set would have this been in?
It wasn't in Holmes, Moldvay or Mentzer -they all had a full to Hit chart/s.
I've only seen THAC0 in the Rules Cyclopedia, or some of the AD&D intro sets.
It did apply to PCs and everyone else in 2e, and 2e didn't have the repeating 20s, or any sort of attack matrices at all for that matter.
I never understood the brouhaha about THAC0 - firstly, it didn't apply to PCs (not in AD&D, anyway), secondly, it breaks down when it hits repeating 20's, and thirdly, the charts were right there anyway.
It did apply to PCs and everyone else in 2e, and 2e didn't have the repeating 20s, or any sort of attack matrices at all for that matter.