Little's Lemma directly relates work in process to throughput. Replace customer with "work" and you have a simple equation to transform your productivity, not

Little's Lemma directly relates work in process to throughput. Replace customer with "work" and you have a simple equation to transform your productivity, not some millenial woo-woo resume-boosting nonsense like in this post. L = Lambda * W L = Avg. number of customers in system Lambda = Avg. customer arrival rate W = Avg. time customer spends in system