london bridges. a lesson.

You may scoff, but it was not until just last week that a game I played when I was young finally made sense. London Bridge is falling down... You know the game, so I won't bother you with the details, but if you imagine the setup of the two children making the bridge, you'll recognize the striking resemblance with this bridge:


But, what you may not know is this is not the London Bridge. It's the tower bridge. This is the London Bridge:


A bit less exciting, isn't it? It's a good thing "Tower bridge is falling down..." still works with the meter.

Here's another bridge: The Millineum Bridge. It's a pedestrian bridge that wobbled when it was first built because someone forgot to take into account the fact that people sort of sway back and forth even when they're walking straight ahead. But, for all that, it's a pretty neat bridge: