Anne and I were standing at the edge of some tidepools, watching tiny fish swim around in them.
“They look just like little versions of the fish we see on the reef,” I said.
“I’m pretty sure that’s exactly what they are,” Anne replied. A wave crashed against the rocks nearby, and the water near our feet gently rose a few inches. As the tide ran out, it created a small current between two tide pools, drawing some new fish into the one we were watching. They swam around together, like they’d always been there.
“You know how I like to think about nature being really simple?” I said, “like how it just repeats little things over and over again to make bigger, more complex things?”
“Like when you talk about fractals?” She said. Another wave hit the rocks, splashing brilliant white foam into the air.
“Yeah, sort of, ” I said. “So let’s look at these tide pools, and consider that the fish who live in them have no idea that, just a short distance away, is the entire ocean, and it’s filled with giant versions of themselves.”
“It’s not necessarily a short distance for them,” she added.
“Dammit. You’re right. That messes this up a little bit, but go with me for a second.” I put my hand into the water and the fish darted away. “These fish may not even know about the fish one tidepool over, separated by a few inches of rocks, unless the tide pushes or pulls them there.
“So. Imagine that we are in this tidepool, and we have no idea that there’s a huge ocean just a short distance away. Or imagine that something is looking at us in this tidepool, and we have no way at all to even perceive that they are there.”
“Woah.”
“Right? And the tidepool can’t exist without the ocean, and the tides can’t exist without the moon, and the moon can’t exist without the Earth, and the Earth can’t exist without the solar system…”
She looked at me, and I trailed off.
“I’m just saying, I think it would be neat if we humans could get out of our tidepool, someday. I’d like to see what’s on the other side of the rocks.”
She clasped my hand in hers. “Let’s go for a swim,” she said.