I sometimes give people in my life more value than they deserve. Then I end up recalculating them in my head. "Ooooh I'm sorry, I thought you were a 43. It turns out you're a 4.3... See what I did there... I put the decimal in the wrong place... That's my bad. Clerical error."
The good thing is, folks are self correcting. They eventually show you what they're worth.