https://www.dbreunig.com/2025/06/22/how-contexts-fail-and-ho...

This guy has a good write up on the topic

Irrelevant nonsense can also poison the context. That's part of the magic formula behind AI psychosis victims... if you have some line noise mumbojumbo all the output afterward is more prone to be disordered.

I'd be wary of using any canary material that wouldn't be at home in the sort of work you're doing.