Recently I had a few packages heading my way from Amazon, one of which was being delivered via USPS. I was not in a real rush for it. Amazon gave me an estimated delivery date of Sunday by 9:00 p.m. I thought that was a little odd but not entirely out of the realm of possibilities given that I have had packages delivered late on Sundays in the past. The Sunday evening the package was to be delivered, I was about to go to bed, around 10:00 p.m., and remembered the package that was to arrive. Not seeing it in the mailbox or on the front porch, I checked the tracking info.
Our dog is pretty conditioned to doing the same things over and over again. One part of his routine is getting a treat any time he comes in from going outside to go to the bathroom. But he knows where the treats are and when we open the closet door, he comes running.
Sadly, people are conditioned to similar specific behavior, only with their mobile devices.