I'd like to know the details of this - I'm a bit behind on my mailing lists. I thought many computational ontologists espoused the "single asserted hierarchy leading to multiple inferred hierarchy" approach? :) - Allyson Lister

dont worry, the is a very long email thread for IDO submission, which obviously changes to be nothing about IDO submission :) - Frank

Yep, lots of things do this, but apparently multiple inheritance is bad for some undefined reason - Phil Lord

This is the function/role thing on the IDO thread? Where you just put everything under realizable entity and it infers in the right place? doesn't seem like multiple inheritance, just allowing inference to the right place...? - Allyson Lister