Client: You told me, you’ve changed XY but you didn’t.

Me: Yes, I have. In order to see the changes you have to empty your cache and reload the site.

Client: Empty what? How do I do that?

Me: (explaining the way through the menus…)

Client: Stop. I can’t explain this to all my visitors. This is too complicated and I never had to do this before on any website. You have to make it work without this empty-cache-and-reload-thing.