Unions are very much an in-group vs out-group phenomenon (and in many cases, the benefits are specifically to the more senior union members vis a vis the less senior ones.)

Amazon makes nearly a billion dollars in profit from search ads. Every week. Each week, they sell merchants and publishers enough search-distorting ads to capture a billion dollars in revenue.

Is it revenue or profit? They are not the same thing.

I would say that's not necessarily the case unless there are zero false positives. In fact, your university situation is exactly where a detection system that works 50-90% of the time would be a nightmare if a meaningful share of the 10-50% errors were false positives.

https://www.goodreads.com/book/show/6055.A_Voyage_for_Madmen

> That's entirely service dependent, and the standard doesn't mandate "Service must not allow multiple passkeys"

Unfortunately, given the laziness, incompetence, and cost-consciousness of organizations like traditional financial institutions, telcos, governments, etc., many of them have & will end up with that implementation.

Merlin - Use lots of data, storage, and analysis to help me identify what bird this is eBird - I can personally identify lots and lots of birds: keep track of all the ones that I and other have seen with maximum speed and efficiency

I disagree. The primary purpose of the college degree is the job. If you don't need a job (which derives from the signaling factor of the degree == the prestige), you can just study the same material and gain the knowledge by yourself without getting a degree.