Me: It's a pain in the neck to shop with you because you take so long. You look at every single item before you'll make a decision.
SH: That's not true.
Me: Yes it is. You look at all the milk.
SH: No, I just look at a representative sampling.
Me: That doesn't work. I learned in grad school that you have to do zero testing or 100% testing because you can never be sure of getting the right N.