I got a lot of mileage in trying to persuade people (especially those that write) that other people don't read by showing pictures of people ignoring the signs

I got a lot of mileage in trying to persuade people (especially those that write) that other people don't read by showing pictures of people ignoring the signs right next to them. Don't sit here. Don't park here. No swimming. I can't remember the company, but I heard about one that started every meeting with 20 minutes or so of silence for people to read the material that they were supposed to have read before they got to the meeting. That is genius...