This . . . Or this?

You know how your eye doctor has you look through different lenses on that optical machine, trying to narrow down the nature of your problem?

"Which is better? A . . . Or B?"
"B"
"One . . . Or two?"
"Two."
"This . . . Or that?"
"Can you do that one again?"


What if your dentist operated this way?

"Here, chew this. Now chew this. Which is better? Hard . . . or soft?"