Link Expiry

We all know it. You search for an issue, or topic you’re interested in, click a few links and boom. Dead end. The page no longer lives there, the domain is gone, or the server ended up at the bottom of a river. Even my website is no exception.

While hypertext documents shouldn’t change, we all know they can, and will do so often. Which is why we have such interest int tools like and the Wayback Machine. These tools regularly scrape, or have users submit interesting material for archiving. It’s frequently used to ensure a particular version of a page or site is preserved.

I started thinking about this because I read an article about strategies for linking to obsolete websites (thanks Beko Pharm). One was to use a periodic link checker to find stale or broken links on your site. Optionally swapping out outdated references with fresh ones, or with links into the Wayback Machine. While this is all well and good, I think it might be more useful to self-archive sites. Use something like wget to pull down the document and associated resources and host it yourself (statically), or at least provide an archive for people to download and inspect.

Has anyone given this any further thought? It doesn’t sound like a technically complicated project, but I’m sure someone has already trodden down this path and came to some sort of outcome or reason it’s not worth it.

Education Misc

The Mile

I catch a lot of crap from people I know for trying to learn and use the metric measurement system (as well as the Celsius scale, for temperature). Despite most of the known world using it, and science using it exclusively, it’s hard to change the opinion of hundreds of years of Imperial measurement being drummed into our heads, as Americans.

Recently, I came across a short article about the history of why the mile is an awkward 5,280 feet, versus the easily convertible 1000 meters to a kilometer. The article keeps on giving, though, with different measurements, like the Nautical Mile and the Pound. Much of what we know (at least, again, here in America) for measurements is based on arbitrary and generally inaccurate measurements of a given area or volume. Some of these measurements are hundreds, if not thousands of years old. The history, however, is fascinating.

I’m going to keep on learning how to Metric and Celsius, despite it all. I find they’re much easier to identify and convert between. I do, however, find myself converting to miles or Fahrenheit for family and friends frequently, though. It’s and uphill battle, but I just have to take it one step at a time.