I've been trying to find out what kind of things NTs do with conversation. A couple hours ago the former tenant came pick up his mail, which I religiously keep for him, 7 months already. I'd asked him to bring me cigarettes because he passes by the kiosk, and had assured him I'd be paying him back. Yet, when he came out of the elevator, the first thing he said was "You know, there's no kiosk between my house and yours." This is seemingly an inaccurate, false, irrelevant statement. However, his intention was not to pass information to me. His intention was to DO something with that apparently smalltalk comment: establish boundaries, show me that the fact that I work hard at picking, keeping and delivering his mail doesn't mean he'll do me favors in return that easily. I, having learnt my lesson after 4 and a half decades at last, didn't correct him in the inaccuracy of his statement (there certainly IS a kiosk on the way from his house to mine). Nowadays I know it's not about passing info, so I answered: "Yes, I know there's no kiosk on your way, but I didn't feel like leaving my house to buy cigs." My answer is also irrelevant and not info, but an action: what I did was show him that if he wants his mail clerk to continue existing, he'll have to start returning the favor as much as I want him to. He promptly agreed and all was fine. If I'd corrected the seemingly "wrong info" he had passed to me, as I did all my life, he would've gotten angry at me - for not playing by the "normal" (actually NT) rules of conversation.
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So-called white lies are like fake jewelry. Adorn yourself with them if you must, but expect to look cheap to a connoisseur.