Earlier quoted context omitted.
> The spread in software ability is so much larger that the -1σ candidates (the least-effective ~15% of people who have ever worked in computer programming jobs) are worth trying to select against in a way the least effective ~15% of nurses probably are not. This isn’t an argument against credentialling since it is literally the direct effect of not having credentialling in software. Credentialing cuts most-to-all of…
You make a good point about an idealized credentialing mechanism cutting off the left tail of the distribution, but the spread in performance will still be much higher in credential-holding SWE than nursing and, because of the high leverage, still worth selecting for. You can only be so much better at nursing than the average qualified nurse. How many more patients will the best nurse save? You can be several multipl…
I...disagree rather strongly that this, to the extent it is true, differentiates SWE from nursing. Comparing workers with identical responsibilities, the same is true in SWE, in both cases there are large impact multiples possible within the field, but they come from roles with greater responsibility; in nursing, because different roles require different credentials, this is reflected in the fact that a more competent nurse will be more likely to take on a more responsible role within the same credentialed category, and also be more likely to acquire greater credentials over time compared to a less competent nurse. “Nursing” isn’t a binary credential, but a whole set, starting with a basically heirarchical set: CNA -> LVN/LPN -> RN and beyond that various Advanced Practice Nursing credentials.
SWEs likewise have wide variety of scopes of practice and responsibility, but because we have no structure in the profession, they are assigned ad hoc and even with common titles there isn’t consistency in substantive roles, skills, or qualification. But, again, that’s a product of the absence of structure and credentialling, not an argument for it.