there is another way in which the double-"you" distinction may nudge thought. It refers to what Dan Slobin, a linguist, has called “thinking for speaking”. Speakers of different languages may well see the world similarly most of the time, but when people are specifically planning to say something, different languages may temporarily force speakers to pay more attention to certain distinctions. For example, every time a German person says “you”, a little attention must be paid to formality. So split pronouns (or other features) may act as a kind of "prime" for certain thoughts or behaviours. Primes can be powerful. Every time I refer to my boss, for example, the formal "you" may prime me to be more aware of the formality and hierarchy of our relationship. So too when I must address an old friend.