I think the point being made here is that when a solution has found its problem, exploitation of that solution drives up rates, because rolling out the solution

I think the point being made here is that when a solution has found its problem, exploitation of that solution drives up rates, because rolling out the solution is an ‘easy money’ investment. Seems reasonable. I can buy that connection. The motor vehicle example makes sense. Of course you then have to hold that theory up to other cases and see if it holds. Like: where was the high rate era that followed from the invention of the internet? Rates have been falling more or less constantly since the mid nineties. And I’m not sure that it logically follows that we will only find solutions in search of a problem during low rates eras, or that high rates only happen during times when a solution to a problem is in the exploitation phase. So.. what’s the predictive value of this connection?