The UK airline system had a "Serious Incident" last year because their IT system was programmed to treat adult passengers as children if they used "Miss" as their titles

https://assets.publishing.service.gov.uk/media/604f423be90e077fdf88493f/Boeing_737-8K5_G-TAWG_04-21.pdf

* the operator's IT system (not the entire UK's)

How you *think* everything works (machine-learning + self-correcting sentient AI)

vs.

How everything actually works:

Guesstimating weight using an incorrect/outdated assumption was a major factor in the 2003 Air Midwest crash that killed 21 people. Just something to think about when doing your algorithms and variables
https://www.washingtonpost.com/archive/politics/2003/05/21/ntsb-cites-mechanics-error-in-crash/98c4a2f3-6495-4eac-b56a-7a8a959ee1aa/