I'm afraid dealing with relative expressions as if they were exact numbers is not only Lojban's feature: I've read a text translated from Italian which contained a phrase like this:"...and Mario's father also was a lawyer. The number of lawyers in Italy is legion. [...]"Though that one might be called an idiom, if I understood it well, 'LEGION' here was like 'zillion' of English - the 'very huge number', put into the sentence like a value (and also refecting the great culture that formerly owned the land of Italia).Nothing's new under the sun.