Mental Models I Find Repeatedly Useful
Interestingly, I find my favourite nitpick: Ockam's razor.  The article quotes it as "The simplest solution is usually the correct one".  This is a common misinterpretation of it and it's interesting that the quote links to the wikipedia page that has a better statement: "Among competing hypotheses, the one with the fewest assumptions should be selected."The key problem is equating simplicity with correctness.  This is usually disastrous.  Once you feel that something is "correct" you stop looking for ways to falsify it.  That's the exact opposite for what Occam's razor is used for.Instead, if you have 2 competing hypotheses (two hypotheses for which the evidence supports both), you use the one with less assumptions.  Partly because the one with less assumptions will be easier to work with and lead to models that are easier to understand.  But mostly because less assumptions makes it easier to falsify.Abusing this principle outside of the scientific method  leads to all sorts of incredibly bad logic.