What communication occurs to draw bees to the location of a fallen hive member? They seem to do that without the dance at all. So there's clearly multiple communications layers. I'm assuming that those layers work in concert to convey more complex ideas.

It's not just the finger pointing, it's the look on his face, and the smell of his sweat.

>What communication occurs to draw bees to the location of a fallen hive member?

Pheromones. Some people claim to be able to smell those themselves, some of them at least.