One of the fascinating things about two-lane highways that mandate trucks to use the slow lane is that the slow lane always has noticeable tire-shaped downward bumps. These downward bumps are a result of the wear and tear from hundreds of thousands of trucks traversing the highway each year.
These bumps aren’t caused by any one truck. That would be impossible.
Instead, they are a result of sustained pressure over years – caused one truck at a time.
Sustained pressure over time – it is how we change the nature of hard things.