Already know this and use in strategic ways. As seen with Manhattan project with the sense meme of the monkeys; hear no evil see no evil say no evil as what you see here, what you do here, what you hear here, when you leave here let it stay here.

1945, it was said by a scientist working in one of the three secret locations by General Leslie Groves, “even those who talked in their sleep learned to keep their mouths shut”.

Tabula rasa is only with full disclosure can there be provision of blank slate.