Fathers take pictures of the mothers

bunny_hugger came out east to visit last weekend, in part to celebrate her birthday, in part to attend the A Big Yes And A Small No concert. I didn't have anything to do with the concert, but she did, and by reports had a great time. But travel and that made up her Friday. Mine was spent in grading, including the first exam I've given in years.

( In fact, I didn't take any pictures, as I failed to bring my camera. There would be some beautiful things, including BunnyHugger, there.  )

Trivia: As the demolition of the original Penn Station began, the station clock was set to the symbolic time of 10:53, denoting the year the station opened (1910) and how long it operated (53 years). Source: Conquering Gotham: Building Penn Station And Its Tunnels, Jill Jonnes.

Currently Reading: From Sails To Satellites: The Origin And Development Of Navigational Science, J E D Williams.

PS: A Quick Impersonation Of Base Nine. Which finally answers one of those questions bunny_hugger had hoped I'd answer, and marks my little math blog's first successful completion of a point.

PPS: Thank you, bunny_hugger!