I think therefore you are

Definitely what we watch, read and hear colours the filters through which we see the world, but what role does it play in creating it?

I've noticed with my recent indulgence and immersion in murder mysteries that people are taking on more sinister overtones than after I read an uplifting book. Because I see them in a more threatening light - does that make them more threatening. Does how we perceive people contribute to their reactions to us? Personally, I believe it does. Not that I think that this a matter that is quite so clear cut as I see you as a creep, therefore you act like a creep to me. But maybe.