Several years ago I saw a flyer for an upcoming local musical performance. It had a picture of a fairly homely woman front and center. I commented to Pastor Belcher that trans people had done a disservice to ugly women everywhere. Instead of just looking at her picture and thinking about the performance, I was looking at her trying to decide if she was actually a woman or just a man pretending to be a woman.
Today I was reading a response on a forum answering a specific home repair question and I found myself trying to decide if I was reading the writing of a person or a machine.
In both cases it totally changes the work of interacting with the world.