Hahaha! I like ping pong (although I am not good at all at that game). I will only add that for AI, there is still a long way to go, but the current state of the art is already quite impressive (knowing where we were 5 years ago).

Five or six different 'flavours'. Well, more like from different countries, hence different beans.

At the end, what matter is to find the right balance between different beans (this is what I meant by 'flavours').

Happy new year by the way!