Perhaps it's better to reference scores to standard deviation rather than the full possible range -- I guess it depends on the particular case.
Yep, that highly depends on the shape of the distribution.
One Gleb Meaningfulness Metric point, likewise, is just a certain fraction of how much variation is possible
Well, we (or at least I) haven't seen Gleb's Meaninfulness Metric, so I have no idea if it's defined via population standard deviation like IQ. It may or it may be. I brought up IQ as an example of a unit which does not directly correspond to, say, thinking speed or working memory capacity -- it's entangled with the test itself, but it does make the numbers interpretable.
Richard Kennaway has posted about an edit war on the wiki. Richard, thank you.
Unfortunately, I've only used the wiki a little, and don't have a feeling for why the edit history for an article is inaccessible. Is the wiki broken or has someone found a way to hack it? Let it be known that hacking the wiki is something I'll ban for.
VoiceofRa, I'd like to know why you deleted Gleb's article. Presumably you have some reason for why you think it was unsatisfactory.
I'm also notifying tech in the hope of finding out what happened to the edit history.