Here is an article about working with your subconscious/unconscious.
It talks about how it doesn't hear no.
Does not process negatives: The unconscious absorbs pictures rather than words. So if you say, “I don’t want to procrastinate,” the unconscious generates a picture of you procrastinating. Switching that picture from the negative to the positive takes an extra step. Better to tell your unconscious, “Let’s get to work!”
https://www.psychologytoday.com/blog/focus-forgiveness/201307/conscious-the-unconscious
So, when you read boogle's sign "Don't be Evil" you are programming yourself to "Be Evil".