Serendipity

[stoutfellow]

I'm reading Darwin's paper on earthworms. At one point Darwin describes the worms' habit of plugging the mouths of their burrows with leaves. Sometimes, he writes, they use pine needles - the type that come in pairs, joined at the base.

As the sharply pointed leaves diverge a little, and as several leaves are drawn into the same burrow, each tuft forms a perfect chevaux de frise.

Not being familiar with that last phrase, I looked it up online; Wikipedia provides a helpful picture. They are precisely the sort of barricade used by fortresses in Skyrim.

Darwin and video games. How 'bout that?