Effective altruists reduce value to anything that can be quantified, but you very often cannot quantify the things we value the most.

I find it astonishing that such an exquisite level of control is actually now possible, and that quantum error correction really seems to behave as we predicted.

Ice cores provide an unparalleled archive of past atmospheric air. There is no other way to get in a time machine and get air that is a million years old.