Since I started coming onto this site I've adopted the strategy of buying/selling techs to and from the AI when I am the underdog. The first time I noticed this, I didn't pay much attention and thought I had misread or something. It took a few times for me to realize what was happening. Sometimes when I sold techs to the AI, their attitude towards me got worse instead of better. This became more noticeable in the current GOTM playing as Russia. There were times when I sold a tech to the AI and they went from polite to cautious, or from cautious to annoyed. Has this happened to anyone else? I think I might have an idea as to why their attitude towards me dropped instead of improved. I sold them the least desirable tech I had instead of one with a high AI priority. I'm not sure if this is the case or not though.