there is no unit measure of "meaning"
If you assign a numeric value to something you call "meaning", there must be a unit measure.
For example, consider IQ points. The unit measure (one IQ point) is 1/15 of the standard deviation of the distribution of IQ scores (which are basically normalised ranks) in white populations. We can argue what it corresponds to in the underlying reality, but at least it is well-defined.
The unit measure, however, may be entirely defined by the scale in question. Gleb could say "my unit measure is 1/9 of the full range of possible answers on my Meaning Measuring Scale". That would be pretty useless, but so is "my unit measure is 1/15 of one standard deviation on my Cleverness Measuring Scale".
Perhaps it's better to reference scores to standard deviation rather than the full possible range -- I guess it depends on the particular case. The other advantage IQ has is that there are now lots of IQ tests and they tend to get ...
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.