Frankly, even a working calculator can induce the same problem. My school allowed calculators with a “solve” function to be used on calculus tests, and a stagge

Frankly, even a working calculator can induce the same problem. My school allowed calculators with a “solve” function to be used on calculus tests, and a staggering number of people would directly transcribe whatever output it gave, regardless of how nonsensical. “NaN” was a favorite.