Observation from spending 20 years doing analysis in different ways:
In any field that is new to you, it takes you several months to get to the point that you know what everyone in the field already knows.
If you start drawing conclusions before that, you’ll probably be wrong.

The internet means it has become extremely easy to find numbers from any new field you’re interested in, and it’s tempting to throw them into a spreadsheet and start making charts. This is dangerous.

Yes, I found those numbers, and made a chart, and the chart looks good. Am I *completely* sure that those numbers say what I think they say?

(Of course there are some people who are quite happy to write an entire book on the basis that they don’t give a damn whether any of the numbers or facts are actually correct, as long as they might be correct and sound good. Each to their own )

It’s not possible to know everything about a field (and probably hasn’t been for a couple of centuries) - but you do have to get to the point that you know what you don’t know.