While I agree with your overall point, that's not the way I would express it. Mistakes that make a big difference are by definition not tiny. It's just that a l

While I agree with your overall point, that's not the way I would express it. Mistakes that make a big difference are by definition not tiny. It's just that a less sophisticated practitioners don't realize that it matters. Being better at something is often realizing what does and what doesn't matter.