I only learned about Ghandi after playing Civ4 like last year, he had the best workers/tanks ever.
Anyways insulting someone based on their general lack of knowledge on a subject which has derivating importance to many people is kind of a lame attack. You can inform them but keep your droppings out of the post.
It's like me asking you guys whether you know how to operate, say, a UNITY400 nuclear magnetic resonance in decoupled mode and calling you idiots for not knowing how to do that. You're only allowed to call people idiots when its their actual job to know this stuff.