[lostlogin]

The accidental crap can go a long way. I recall someone using a superscript ‘O’ as a degrees symbol in a medical report. This then got converted to a non—superscript character and rather changed the meaning. Extra unhelpful was that they wrote the word ‘degrees’ after the attempt at the symbol too.

[kzrdude]

There's also the Spanish superscript a and o symbols (used for ordinals) that can be confused for this.

[xp84]

“patient’s temperature was approaching 100O degrees”

Very nice error :D

[lostlogin]

It was a measurement of angle for an ortho surgeon. However as you point out, wrong by a x10 multiplier has the sanity checks kicking in.