Two months since the landing and I’m still trying to figure out what it means.

Not what happened — I know what happened. Neil Armstrong and Buzz Aldrin landed on the Moon and walked around for two and a half hours and came home. I know the engineering. I know the politics. I know the Cold War context and the Kennedy speech and the Grissom fire and the twelve years of watching.

What I’m trying to figure out is what it means for us. For people. For the thing that we are as a species.

Here’s the version that satisfies me most: the Moon landing is evidence that human beings can decide to do an impossible thing and then do it. Not just the Moon specifically — any impossible thing. The impossibility of going to the Moon was technical, not fundamental. It required solving problems nobody had solved before, building tools nobody had built before, training people to do things nobody had done before. It required enormous investment and political will and the labor of hundreds of thousands of people over a decade. But it was doable. And we did it.

The lesson isn’t “now we can go to the Moon.” The lesson is “there are things that look impossible from the outside and are merely very hard from the inside, and the difference between the two is whether you decide to commit.”

I think about the engineers who worked on the guidance computer — they were writing software for a machine that had barely been invented, to perform calculations in real time that nobody had done before. They couldn’t know if it would work until it worked. They had to build the understanding as they built the machine. And it worked, because they were smart enough and they worked hard enough and they had enough time (barely).

The problems this country — this world — needs to solve: air and water quality, poverty, the diseases that still kill millions, the political arrangements that still let a few people impose misery on many. None of these are as technically hard as going to the Moon. They’re harder in other ways — they require moral and political will in ways the Moon required engineering and scientific will. But they’re not impossible. They’re merely very hard.

I’m not naive enough to say “if we can go to the Moon, we can end poverty.” The mapping isn’t that direct. But I do believe that the Moon landing demonstrates something about what’s achievable when human beings commit clearly to something difficult and keep that commitment.

We committed. We went. We came back.

What else do we want to do?