“One swallow does not a summer make.” —Aristotle

You took one class on pottery. You read one chapter of a book. You listened to one speech on that subject. You wrote one thesis on that question.

In a human life, that might take up a sizable percentage of your conscious memory. You might draw from it over and over again, finally leading yourself to believe that you’re an expert, or getting close to it.

But to the world, on geologic time, what is it? A fleeting moment.

The Earth has already rotated a little since you began this post.