[EricH]

Including the "no intentional detaching of parts from robots" rule, the "no metal on carpet rule", and quite possibly one or two others. (No wedges came after there was a year with a tie elimination match, when tipping caused two DQs, one per side. The same year, two of the world champions had sloping sides or deployable defensive wedges.)

Oh, yeah--there's a series of posts by Andy Grady, something about "FIRST History 101", that goes after a lot of the changes since the old days. Such as The Bracket of Doom! and the Legendary Poof Ball Journey, which has since been equaled by the Chase for Orbit Balls.

There is also the Technokats History Project.