the.com/queueing theory
the math of waiting in line, invented by a man who really hated hearing busy signals.
means a branch of applied math that models how lines form, move, and clog so you can predict waits and design better systems.
from born in 1909 when danish engineer agner krarup erlang, working for the copenhagen telephone exchange, modeled call arrivals to figure out how many phone lines a switchboard actually needed.
erlang unittelecom traffic is literally measured in erlangs
single line winsone snaking queue beats multiple lines, mathematically proven
used everywherepowers call centers, hospitals, traffic lights, cpu scheduling
key insightvariability, not just volume, is what creates long waits