If there is no throttling, there could be a dozen requests, with different responses arriving in arbitrary order. Which one do you believe to determine the outc

If there is no throttling, there could be a dozen requests, with different responses arriving in arbitrary order. Which one do you believe to determine the outcome of the operation? How long do you wait for responses? etc. etc. If your going to build all the machinery in the client to deal with this situation, it's much easier to just throttle.