Sometimes we encounter things that cause us to question the very fabric of our reality. For one Twitter user, this textbook was one of those things:

Bella tweeted:

Because if you look closely, that’s what’s happening:

Then, people started really losing it:

This person was not impressed:
But also probably, that person was wrong.
Because some people did some sleuthing, as people on the internet are wont to do. And this stock photo exists—which by the way can we talk about how ridiculous stock photos are—and is pretty strong evidence in favor of a photoshop theory.
For their part, the texbook company maintained the mystique.