Repair teaches you what disposable culture prefers you forget.

Fixing something changes your relationship to it. You learn how it was made, what fails first, and that the failure was often small and ordinary. That knowledge is inconvenient to an economy that would rather you replace things, and once you have it, disposability starts to look like a choice rather than a fact.

Repair one thing you were about to throw away. It may not work, and that is fine. The point is what you learn about how much of what breaks is genuinely finished, which turns out to be far less than you assumed.