> But a lot of technologies turn out to be S-shaped, not purely exponential, because there are limiting factors. S curves are exponential before they start tap

> But a lot of technologies turn out to be S-shaped, not purely exponential, because there are limiting factors. S curves are exponential before they start tapering off though. It's hard to predict how long that could continue, so there's an argument to be made that we should milk that while we can.