National Pi Day (Send Help)

Today, apparently, is National Pi Day.

Now, for most people, this means either mild mathematical appreciation or aggressive pastry consumption. Possibly both. In this house it means Professor Clive Harrowgate has decided it is his solemn academic duty to explain π to the gremlins.

To be clear: I did not ask for this.

Professor Clive Harrowgate — who, I should note, is a highly distinguished academic in approximately three fictional disciplines — arrived this morning with a chalkboard, a piece of string, and the air of a creature who still believes knowledge can improve a situation. His reasoning, as far as I can tell, was that education is important and one must foster curiosity in young minds.

First mistake: assuming there are minds.

Second mistake: assuming curiosity will go anywhere good.

The lecture began reasonably well.

"Pi," he began, adjusting his spectacles with scholarly optimism, "is the ratio of a circle's circumference to its diameter."

He drew a circle. He labelled things. He even demonstrated with the string.

For approximately thirty seconds, it looked like this might work.

This was suspicious.

Carl, who had been hanging upside down from the light fixture for reasons known only to Carl, waited until the professor reached the phrase "an infinite decimal expansion" before raising a hand.

Now. Carl does not raise his hand to ask questions. Carl raises his hand when he is about to introduce chaos in a polite and structured format.

So this alone should have been a warning sign.

"Yes, Carl?" said Harrowgate, in the careful tone of a creature trying to encourage intellectual curiosity.

Carl squinted thoughtfully at the chalkboard.

"Professor," he asked, in the polite voice he uses right before something terrible happens, "what impact does this have on chandelier-swinging?"

There was a silence.

Not a normal silence. A very long, complicated silence where a creature's understanding of the universe quietly leaves his body.

I wish I could adequately describe the look that appeared on Professor Harrowgate's face. It was the expression of a creature who had prepared to discuss infinite decimals and instead found himself moderating a symposium on ceiling-based transportation.

Behind him, several other gremlins had begun evaluating the light fixture with what I can only describe as engineering interest.

I watched the exact moment Harrowgate realised three things:

1. They were not asking theoretically.
2. The chandelier was structurally load-bearing but emotionally unprepared.
3. π was not going to help him today.

Carl gestured helpfully at the chandelier. Still hanging from it.

"Like," he clarified, "if π is about circles… and chandeliers are circles… does knowing π make the swinging better? Is there a formula?"

He attempted, bravely, to continue.

"Well," he said slowly, "technically speaking… it would depend on the arc of the swing."

This, as it turns out, was the wrong answer.

Because now Carl was interested.

"Is the arc a circle?" he asked.

"Yes," said Harrowgate, clearly against his better judgment.

"And if the arc is a circle," Carl continued, with the enthusiasm of someone who has discovered a new and academically sanctioned form of mischief, "then we should probably test the ratio."

Carl nodded very seriously.

"So pi is useful," he concluded.

And that, apparently, was enough mathematics for one day.

Professor Harrowgate followed Carl's gaze upward to the chandelier. Then downward to the tape measure Allan had somehow already acquired. Then he looked at me.

The look of a creature realising that the laws of mathematics are about to be tested using goblins and interior fixtures.

"Perhaps," he said carefully, "we could explore π in a more… theoretical manner."

Carl nodded thoughtfully.

Which is never reassuring.

"Yes," he agreed. "We should probably do both."

So if anyone is wondering how National Pi Day is going over here:

The chalkboard currently reads 3.14159.

The chandelier is still attached to the ceiling. For now.

Carl is measuring the chandelier chain and asking about swing radius.

Two gremlins are arguing about whether centrifugal force counts as "science."

Someone has drawn a circle on the wall.

Someone else is measuring things with a piece of string.

And Professor Clive Harrowgate is sitting very quietly with a cup of tea, staring into the middle distance with the distant look of someone reconsidering several life choices. He now understands exactly why mathematicians prefer quiet rooms and no gremlins.

Personally, I'm just hoping we survive the experiment.

And also that someone eventually explains to them that π does not, in fact, require practical demonstration involving ceiling fixtures.

Though given the trajectory of the day so far…

I suspect we are about to learn several new things about circles.