Right back @ Eklektikos: Fine by me. You can use your Jag Warriors, and I'll use my Panzers, and we'll see which UU is better, and settle this for all time.... But on the point of bronze, its true that by the time we build an effective invasion force they'll have already discovered Bronze. However, a suggestion: wait a bit before trading. That way, if they're working on Bronze, they'll have wasted research time. Plus, it will at least forstall for a coupla turns the production of spears. Cutting down production by even 1 defender might mean life or death, so it might be a useful strategy. And if they find it in a goody hut, then it woulda been too late anyway, but thats the way it goes.