To give you a more practical example, imagine a couple wants to sign a prenuptial agreement (prenup) : One is a Ti dominant while one is a Fi dominant. If the Ti dominant where to come to the Fi dominant, the IxFP would get really triggered. “It’s like planning a divorce, do you literally think our marriage will fall? If you actually trusted me you would be convinced enough that we won’t divorce anyway, so your problem here is that you actually doubt our marriage!! Signing a prenup is stupid, and you are stupid too!”. On the other hand, the Ti dominant might the value of trust in relationships, but it will also think reversely: “There isn’t any reason why I wouldn’t sign a prenupt, I’m not losing anything so the true question here is why not?”. What Ti truly does is impersonally estimate the ratio between the effort/time put into doing the certain act and the result got. The equation here is “effort/result”. If the ratio is below 1 then it is worth it, (for the prenup you only sign some papers, no big deal right? It’s not like you’re going to the end of the world to “plan a divorce”) if the ratio is above 1 then it’s unfair.

What if the Fi-dom is a multi-millionaire and the Ti-dom is a poor public school teacher?