el-remmen
Moderator Emeritus
I think there are a couple of things at play here. First, it will almost never matter if the group gets the rules wrong. Second, sure, it's 3 to 5 minutes to look something up, but that's an extra 3 to 5 minutes of content you can get through for every instance this occurs at the table. Over time, this starts to really add up.
I guess 3 to 5 minutes (probably really 1 to 3) every other session or so doesn't seem like that big a waste to me - esp. out of a 5 hour session with a pretty focused group.