Forget lists of words and punctuation marks. If you really want to know if a text was written by AI, look for this particular sentence structure.

As artificial intelligence becomes increasingly capable of generating polished, grammatically correct text that meets academic standards, educators face a critical challenge: How can we teach students ...

E ach time I embark on a new writing project, I find that I’ve forgotten how to write. I type and delete sentence fragments. I list claims in a random order — then decide that most of them are ...