So, at tea this afternoon:
Me: Hey, Vivienne, here’s a cool math problem:
Vivienne: [skeptical expression]
Me: Suppose I give you an envelope with $20 in it, and I have another
envelope with either half that much or twice that much in it. I offer
to trade the envelope you’ve got for the one I have. Do you take the
Vivienne: No. $20 is enough.
After twelve years of marriage, sometimes I can’t tell whether she
loves me, or whether she hates me but we get along well.