Monthly Archives: January 2024

Sideband #80: Divide by Zero

You may remember learning way back in grade school that you can’t divide by zero. You may remember being told that division by zero is undefined. But have you ever wondered why we can’t divide by zero? Couldn’t the answer just be zero? We get zero when we multiply by zero, so why not when we divide?

But dividing is the opposite (or inverse) of multiplying, so if multiplying by zero gives zero, then maybe dividing by zero gives us… infinity? But infinity isn’t a number (it’s an idea), so that doesn’t work, either.

In this post I’ll dig into why division by zero is undefined.

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Friday Notes (Jan 19, 2024)

The first Friday Notes of 2024. (The title nicely caps the 2024, 2023, 2024, 2023 series from the titles of the previous four posts.) We’re well past the glut of holidays, and it’s back to business. There is also the fresh-start sense of the new year. I’m already thinking about all the stuff I want to throw away this coming Spring Cleaning.

My various piles of notes grow smaller and smaller! In some cases, because I deleted notes that seemed to have aged beyond their lifetime. But these Notes posts have been instrumental. In some areas, I’m actually scraping the bottom of the barrel.

But I still have notes, so here we go again…

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2023: All the Charts

This post contains the post statistics charts I didn’t have room for in the 2023 wrap-up post. There are a lot of them, and I don’t imagine they’re of much interest to anyone but me. I post them mainly to document the blog. A set of milestones, if you will.

I confess to being fascinated — and utterly befuddled — by which posts receive attention and which little piggies get none. It’s particularly interesting to me when an old post — especially one that never got many views — suddenly gets noticed and sometimes even slightly popular.

Mostly the stats are similar to previous years, but 2023 did bring a few surprises.

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2024: Looking Ahead

The other face of Janus looks forward to the Christmases yet to come. Or words to that effect. The last post looked back at some highlights from 2023; this one looks forward to the hopes, plans, and guesses for 2024.

Hopes and plans are easy enough, but when it comes to guesses, I’ve never thought much of futurists. I don’t have much truck with “could” and “might” when it comes to the actual world. Science fiction is my favorite fiction, but futurists claim to be prescient, and I very much doubt it.

Regardless (and heedless), some hopes, plans, and wild-ass guesses, for 2024.

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2023: Looking Back

I thought this year’s Janus posts — one looking back, one looking forward — would be unusually late, but it turns out they’re only one day later than last year’s pair (assuming I post what I’ve just started writing today). Hosting my furry nephew Bentley over New Year’s accounts for the (thoroughly delightful!) delay this year and last.

As usual, this post looks back at the previous year, 2023, and tomorrow’s post (assuming I write it and post it) looks forward to what 2024 might hold in store (guesses and hopes).

And, of course, there are stats and charts.

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2024: Happy New Year!

Imagine my surprise at finding myself in:

Because I still remember wondering if 1984, when it finally arrived, would be anything like the book. (Not to mention how far off 2001 seemed back then.)

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