Bee Waggle Dance

I thought that the way the bees communicate to each other is amazing, and also a bit harsh. The video said that if the bee does not stop dancing immediately after the other bees want more information, they sting that bee to death. That seems like a very high pressure way to tell bees where to find flowers. When the video actually showed the bee dance, I thought that it was amazing that bees could count and tell direction from the sun. When we go into the hive we probably disturb the bees too much to see the waggle dance but it would be incredible to actually witness. However I was wondering, since bees have very poor eyesight how they would be able to discern the precise movements of the bee. Especially the counting part, it happened too fast for me to see it the first time. I could only see it when the video slowed it down, so with the limited eyesight of the bees I'm not sure how they can determine that the bee wagged back and forth six times.