Finding Joy on Mother's Day

There has to be a formula for the perfect gift. In this formula the level of delight would be equal to the level of expectations in the recipient, added to extent of advance planning, divided by whether the recipient had any clue that something was being planned. Or something like that. Unfortunately I'm not enough of a math geek to come up with a workable formula. I'll bet the XKCD guy could though.

The point I'm getting at here is that Howard totally managed it this year. I was all set ...