Earlier quoted context omitted.
I believe this sentiment is mostly a symptom of the extreme prevalence of charlatans who use economics as a marketing tool rather than a social science. Economics is really just accounting, statistics and psychology. But mostly accounting. I think people get really worked up about the “unknowable” parts and fail to see that accounting can open up tremendous insights if we only take the time to understand it well. If…
After reading quite a lot about economic policies it sounds a lot like some sort of engineering - you have some levers/gadgets that you can use, but you have to understand the consequences of each of them and how the interact with the "real world" of companies and people participating in the economy. Sure, people being certain about what's going to happen and when is akin to snake oil, but using good insight and tool…
Unfortunately, there are way too many variables, interactions, etc, etc to have any real confidence in those measures. It's further complicated by the idea that the normal tools (primarily interest rate & money supply delivered via subsidies, etc) are beyond their "normal" operating ranges.
When the Fed rate was 5% and loans were 8%, lowering rates encouraged borrowing. When the Fed rate is 0.25% and loans are 3-5%, qualified people can get all the money they want.. now what? Do they give money to people who can't pay it back (mortgage crash) or spend it on "shovel ready projects" which take 12-18 months to get started?
Alternatively, when consumer spending makes up 70%+ of the economy, consumer confidence is probably the single most important metric.
This is less engineering and more psychology at scale.