I don't understand the statement in the Little's Law example in section 2.1.2 that asserts that "On average, there would be 15 such threads waiting.". My interpretation would have been that 15 connections is the average number actively being used, and I don't understand why that number would be the length of the queue of threads that were still *waiting* for connections. I suspect I'm missing something simple, but any clarification would be appreciated.
