There’s a belief I keep running into, usually from people who are proud of how hard they worked to learn something. They say you can’t really know a field unless you’ve struggled through it yourself. You have to earn the knowledge. Reading someone’s explanation and just accepting it is cheating, or at least it doesn’t count.

Let’s call this the labor theory of knowledge: the value of what you know is set by how much effort it took to get there.

It’s wrong, and it’s wrong in an interesting way. It confuses two things that happen to travel together. Struggle often does accompany real learning. But struggle isn’t what makes the learning real, it’s just a cost.

Before Newton invented calculus, he didn’t have to rederive Euclid from scratch. He only had to understand geometry before he could build. Every physics student today absorbs in a semester what took the species two thousand years and several geniuses to work out. They don’t have to earn it the hard way, they just pick it up and keep going.

It’s a good thing each generation doesn’t have to suffer through everything the last one suffered through, otherwise we’d never get anywhere. The reason we make progress at all is precisely that you can take a good explanation, understand it, and improve it without paying the original discovery cost. Explanations are the most leveraged thing in the universe. Someone spends a lifetime understanding a piece of reality, explains it well, and now anyone who reads it carefully gets the lifetime of work for the price of an afternoon.

The thing that actually matters is whether you understand the explanation, not how you came by it. Understanding is the test, not effort. You can grind for years and still hold a bad theory. You can read one clear page and grasp something true.

So when someone tells you they need to do the hard work to build a baseline before they’re entitled to an opinion, be a little suspicious. Yes, some things you understand better by doing. But progress is always possible by taking an idea seriously right now.