If you go observe the restaurant (or work there for some time) you'll notice that these failures generally occur during crunch time because the screens that ins

If you go observe the restaurant (or work there for some time) you'll notice that these failures generally occur during crunch time because the screens that instruct what is in the order become overfilled with too many orders. Nevertheless, if you are present you can observe the build process of your food and see that typically it is generally within the correct time window. >The staff are incentivised to just press everything through the system asap regardless of the actual status of the food. They're presumably performance-measured against targets and aren't punished for just checking that everything went through quickly regardless of the reality. But at the end they are still required to deliver the food or else there will be worse consequences. It is just not realistic to expect perfection in a noisy system where you can't exactly predict how many people will come during a busy hour. Mcdonalds is trying to improve with their massive data collection operations. Things such as reading your license plates in the drive through are not only just a profit making scheme: they help predict analytics on what you may order and the goal is to improve wait times during busy hours.