In analog days, the shutter let light in for some determinant time. That caused the film to be exposed for that duration. But in the digital age, why doesn’t “setting the shutter speed” just tell the internal computer how long it should record data from the sensor? What good does it do to actually open and close a physical shutter?

Just curious. And probably misinformed.

Fine. But why is it an evolutionary advantage for moths to fly in a straight line? Where are they trying to get to so quickly? And isn’t there a metaphor for MBAs somewhere in here?

If you were to start any spot on land on Earth and dig a hole through the center of the Earth, what percent of the time would you come out on another spot on land, as opposed to having water spray out, comically spinning the Earth out of orbit to its death? (To be precise, the question isn’t about water spraying or not spraying out of the hole. It’s about the percentage of times you’d hit land.)

The answer is in the comments. But, wait, to help you, this fabulous mashup using the Google Maps API will let you sink your own knitting needles through the Earth’s nougaty core!

(All of this came from a mailing list I’m not supposed to acknowledge. Answers authenticated by the good folks at Wikipedia.)

Because this is an Order of Magnitude quiz, you win if your answer is within one order of magnitude of the right answer.

The right answer is in the first comment.

Note: Winning means that you win nothing. Just to be clear.

This is an Order of Magnitude Quiz, which means you win if your answer is correct within an order of magnitude. It also means, however, that there’s nothing to win.

Click here for the answer

[Tags: puzzle andover ]

What is the current optimal highway speed?

And, for extra credit, what is the optimal speed on or off the highway? If I want to get maximum miles per gallon but don’t care how fast I go, how fast should I drive? Two caveats: Yes, I know this will be different for different cars in different conditions. And, no, zero mph is not an acceptable answer, no matter how true it is.

[Tags: puzzle mileage mpg cars fuel_efficiency ]

For the sort of run-of-the-mill yogurt — no fruit on the bottom — you buy in your average American supermarket, I believe it is true that the further you go down in the container, the more fattening it becomes.

Why might that be true? More important, in how many different ways can we take that putative fact to make it true?

[Tags: puzzle yogurt ]

What is the best Python-referencing headline for a post announcing this? “A hovercraft full of reels”? “Not pining for the fee(ords)”? “Wring out your dead”?

[Tags: monty_python doep puzzle ]

This is something only the wisdom of the crowds can answer. If you’ve come across a national, regional, or industrial version of a bagel that is less bagel-like, let me know. Otherwise, the laurel will remain on Kristiansand’s brow. (It’s a lovely city. I just wouldn’t go there for the bagels.)

[Tags: puzzle bagels norway crowd-sourcing ]

In fact, we just bought the “light” version of it, which is therefore some sort of simulacrum of the original. I can’t figure out whether its name should therefore be:

1. “I Can’t Believe I Can’t Believe It’s Not Butter”

2. “I Can’t Believe It’s Not Not Butter”

or

3. _______________________ (fill in the blank)

[Tags: puzzle ]