The real takeaway from the article is that you can rathole forever on ill-defined problems. Decide upfront whether you care about actual humans and their usecases or hypothetical humans and their hypothetical usecases.
Or even, which subset of humans' uses cases you wish to concern yourself with as you can't always please everyone or tackle everyone's problems. If one only cared about a single language everything becomes much easier.
Or even, which subset of humans' uses cases you wish to concern yourself with as you can't always please everyone or tackle everyone's problems. If one only cared about a single language everything becomes much easier.