[netcan]

Impactful changes will often significant because of their nth order, not just their direct effects.

For example, Google Adwords has completely changed how customers are acquired for a lot of industries. This changes how companies are structured, which companies succeed and how they are built. That's a big change.

Lets stretch the mechanic example. If people got better, cheaper, easier mechanics this could make them hold on to cars for longer. This could in turn change the way cars are built and change the structure of this giant industry.