"It's a poor sort of memory that only works backwards," the Queen remarked.

Sean Carroll via WIRED:

The particular aspect of time that I’m interested in is the arrow of time: the fact that the past is different from the future. We remember the past but we don’t remember the future. There are irreversible processes. There are things that happen, like you turn an egg into an omelet, but you can’t turn an omelet into an egg.

Why was the entropy ever low to begin with? Basically, our observable universe begins around 13.7 billion years ago in a state of exquisite order, exquisitely low entropy. That is what I’m trying to tackle. I’m trying to understand cosmology, why the Big Bang had the properties it did.

And it’s interesting to think that connects directly to our kitchens and how we can make eggs, how we can remember one direction of time, why causes precede effects, why we are born young and grow older. It’s all because of entropy increasing. It’s all because of conditions of the Big Bang.