On 21 September Deb Bledsoe wrote:

my physics prof used to make us do an estimate in our heads,
of each exam question, and write it down....

My physics prof, first semester freshman year didn't teach me this "trick",
but he did teach me another:

Failing student: "How about partial credit?"

Sparky: "No partial credit. If you design a skywalk and it falls killing
dozens of people, you do not get partial credit. You get all the credit."

Failing student: "Wha?"

The failing student now works for Merrill Lynch, has several children, and
lives in Greenwich, Connecticut. I didn't fail this class -- in fact, if I
can toot my own horn for a minute (a "trick" taught by another prof) -- I
may have aced it. And, I live in a market-rate apartment in Manhattanville
with a view of the IRT viaduct out my rear window, have no children, wear a
plastic hat and steel-toed boots half of my waking hours, and find myself
frequently facing twenty-stories of stairs in buildings without elevators.

I think my middle-age paunch is smaller than his.

Call me "Static".