The number of quantity

No sort whatever though my Better Half, who is much smarter than I, thinks I'm pretty good at fixing household objects

Not even a little bit, don't even know what it is

I haven't been proven wrong. Criteria is different from the other two. See if you can deduce why.

Nice to see someone else here, instead of just me and the nutty "professor".

You tell us why as it's you, as it always is, suggesting the arrant nonsense.