I just got done grading about 100 writing assignments.
I suspected two of being copy-pasted from an AI. I ran them through an AI detection tool. The first got an 83% likelihood and the second a 92% likelihood of being written by AI.
I'm sure there are some others that were written by AI, but that I simply missed.
Still, I think I have a pretty sharp nose for when something is written by AI. But I can't really articulate why that is. For one, perfect grammar is one of the giveaways. Another is perhaps the use of precisely two adjectives to describe something, and a fondness for lists of three. Another is a remarkably professional but neutral tone in all things. As well as a lot of hedging in their taking of positions. Calling issues "nuanced and complex" seems to be a favorite of AIs, for example.
What do you think? What are some dead AI giveaways?