Now this is playing with friends, not with people you don't know, but I made a deal with my friend. He traded me engineering and I promised him that I wouldn't trade it until he built Notre Dame, and I also promise not to build it myself. Now several turns pass and all my neighbors have feudalism and I am falling behind, my friend has it. Now I demand that he give me feudalism or I AM going to trade engineering. He refuses to do so and tells me that I shouldn't do that blah blah blah, he isn't in a position to make any kind of threats and he isn't making threats just telling me he will be upset. Now on top of this he tells me he hadn't even started building Notre Dame yet, besides the point of me extorting him but at that point I decided that I was definitely going to trade Engineering. Not saying I didn't reneg on the deal, but it was somewhat unfair of him seeing how implied he was already building Notre Dame, not just forcing me to sit on Engineering for as long as he felt like, when I started extorting him I wasn't sure I was going to reneg if he refused to give me feudalism. But I felt it was dishonest of him to imply he was building Notre Dame and then not, keeping me from trading the tech for my advantage. When I found out he hadn't even started building the wonder, and engineering was the only tech I had that my neighbors didn't have for me to trade with, my decision was made. On top of this the trade was in his favor beakers wise. Somewhat besides the point though... Now certainly a shady thing to do, but do you guys think it is flat out cheating? He said he thought I was cheating but I just feel like I am role playing, world leaders back out of agreements all the time, wether it is unfair or duplicitous or whatever.