Joanne said:
Though there is the little matter of senseless violins...
(well, I couldn't wait for Dana mention it...)
Why, thank you! But in this case, my sole contribution was chortling.
Actually, I think the difference is that Watson catalogues large areas that Holmes knows absolutely nothing about, whereas between Avon and Blake they're convinced that Avon knows everything (f'rex Blake's cheery confidence in Avon's ability to master brain surgery).
Dana