The other day I installed the Jetpack WordPress plug-in. It was sort of forced upon me because I used to use the WordPress.com Stats plug-in, and Jetpack sort of supersedes it. It adds a whole lot more than just stats though, it’s also replaced the plug-in that I used to use for my Twitter feed at the side of the page, in fact I turned a few of its features off as I didn’t think I needed them. For some reason one of the included features is support for (that’s not me showing off, that’s how it’s supposed to be written), the mathematical typesetting language. A fun fact is that it’s supposed to be pronounced “lay tech” and not “lay tex”. I find it a slightly weird addition to the plug-in because I can’t see that many people wanting to use it. The WordPress.com stats plug-in was probably one of *the* most used of all the thousands of WordPress plug-ins available, and so you’d think the Jetpack plug-in will become similarly popular, but how many will need to write out mathematical expressions? It must be a very small subset. But, because of the way the plug-in is designed, it doesn’t mean people’s web servers will be slowed to a crawl by running unnecessary features, as most of the work is done by WordPress servers instead. In some ways this is the saving grace of the Jetpack plug-in, I’d probably have uninstalled it if I thought the junk I wasn’t using was going to affect performance too much. It’s also a weakness though, this fancy logo is actually an image generated on WordPress.com, which means if that’s down then you won’t be able to see these fancy logos on my site! That may not be a problem here, but imagine if I’d put up a proof of or something, the world wouldn’t be able to see my genius! So, like many things, the way Jetpack is implemented is a bit of a double-edged sword.

During my degree I wrote a few essays in , so I got pretty good with it, but I’m a bit rusty now. I can still do the basic stuff, like this: , or maybe even something a little bit more complicated like this: . This all looks a little ugly stuck in the middle of my text, so I should probably stop using it. It would probably look better if it were all on separate lines, but that adds other problems. If I ever have the need to put some mathematical stuff on here I’ll probably just write a .tex file and create a .pdf, because that’s probably much easier. That one formula has just reminded me of something I was reading the other day, about Pi being “wrong”, in the sense that the historical definition is that Pi equals the ratio of a circle’s circumference to its diameter, but a much more natural choice would be a constant equal to the ratio of a circle’s circumference to its *radius*. This constant would of course be , since the diameter is twice the radius. It’s a good read, and that page also has a much better way of doing in a webpage because it uses a JavaScript library instead of images. As that Jazz guy on The Fast Show used to say: “Nice”