I like this a lot. Enough that I might even actually use it at all. Not sure I'd memorise the table, though pinning some percentage points to decibels should be reasonably memorable.

(I've been messing with decibels of sound lots lately. I'm thinking of 30dB as certainly the sort of range I can resolve to 3dB steps and even 1.5dB steps, 'cos hearing can do that. So it looks like it might work because it maps it easily onto a domain I'm used to. I realise probability isn't sound and I expect my probability resolution to end up different ...)

I wonder if this is a good way to get better resolution on one's probability sense.