Underestimate the AI: Reap the consequences.

[Yossar]

A bit off topic but another case of underestimating the AI. Playing Multiplayer with independent strength 7 and very difficult research, and BE Ermor goes AI on turn 2 or 3. By turn 14 Ermor hasn't left his castle. His army is slowly growing but I figured it might just be someone stuck summoning spectral velites. I figured the AI had given up and so I attack his capital. But to my surprise he has troops patrolling the province and I lose. He then counterattacks on the next two turns. I guess I should have expected that but how can you go thirteen turns without taking a single province, even on independent strength 7??? None of them had anything too powerful in them.