I've been interested in communication for a long time, and I am especially interested in the use of language for persuasion. Once you know how powerful words really are, you'll start using them with care. The conscious mind behaves in patterns and that those patterns can be broken. It's also possible to embed hidden commands inside language in order to trigger a response from someone. In fact, you can break the thought pattern of someone and replace it with yours. This can be easily proven. You read my words I typed here, they entered your mind in both a consciousness and unconsciousness way. I transferred my thoughts into your thoughts, unconsciously I might have given new instructions to change your feeling or ideas about something in a covert way. You are probably aware of this already, because certain words make you feel different than other words. Hacking the mind through covert manipulation is easier than you might have thought. Ask yourself, what impression did I gave just now? what did I change you weren't aware of before reading this text? Which thoughts are yours and which were mine? and how will they affect the rest of your day?

source: OWASP News