It was the conversion booklet put out by WotC for the changeover from 2e to 3e. Just skimming through it, I knew it was not the direction I was interested in. Whereas 2e was definitely more structured than 1e, it also felt soulless as it was obviously trying to compensate for uncreative DMs, leaving no room for innovation by the players or DMs. Instead, 3e just broke things down even more, getting rid of race/class restrictions, making weapon groups available to any class, butchering thieves to spread their skills to all, etc. Toss in that Neverwinter Nights was boring as hell, it’s no wonder I got into modding BG.