Let’s take a moment to imagine your main purpose in life is to cut down trees. You take a lot of pride in this job, and your goal is to cut down an acre of trees every week. The thing is, your tools consist of a handsaw, ax, rope, and a ladder. Those are the only kinds of tools you’ve ever used, and when your ax needs sharpened, you sharpen it. Your employer doesn’t buy you new tools unless it’s absolutely necessary.