It makes sense to have specific skill, ability and knowledge tests as appropriate. Like having a written and road test to get a driver license.

But these overall comprehensive “personality” or “cognitive” tests are blatently unethical.

Hamilton with a population of 570 000. So the data center would employ about 4%. Sure.

Yes

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Nurses strike all the time.

Here is a list of some strikes in US only. 2026: https://nurse.org/articles/nurse-strikes-list/, 2025: https://www.beckershospitalreview.com/hr/7-healthcare-strikes-in-2025/

Sometimes they maintain minimum care. There is advance notice provided. Nurses can also do things like provide care but not chart it in the correct way to get “counted” by their funding model. So the employer loses money while patient care is if anything improved.

Nurses can and do strike. People support them because organized nurses who can enforce collective decisions provide the best care.

There was just a victory in New York:

https://www.ajmc.com/view/historic-nyc-nursing-strike-ends-with-3-year-contract-wins

https://www.myamericannurse.com/from-applause-to-action-why-new-yorks-nursing-strike-matters-for-patients-nursing-students-and-the-future-of-the-nursing-profession/