Have you ever stepped away from a line or missed a train on purpose, and noticed some really random shit start to happen?
There is a theory I like to call The Prolonged Dabble In The Uncertain. Now what it is, is something quite simple. Essentially, all I am saying here is that if you were to spend more time doing something that most people don't do, then the probability of something weird happening increases. As you have now spent time doing something for a period of time that is longer than the average time usually spent doing that thing, the outcome can be quite different from the standard set of outcomes that usually occur.
For example, if you have a routine of walking to the station from your office then every time you do it in similar periods of time that you usually do it, and also take the route you usually take. Then the chances of something weird happening are very low as you are not doing anything different each time you take up this task.
However, if you were to walk all the way to another station that's even further, walk halfway back for no reason, and then sit under a random tree for 10 minutes at night, then it should hardly be a surprise if anything weird was to happen I suspect. You have maxed out on increasing the probability of the weird with every step you took and every second you spent unnecessarily.
I like to believe that it is due to the law of averages, all the systems of routines around us are governed by the law of averages. And any of those that trickle astray tend to face some random consequences. So in a way, a routine, or a a system is protection against the uncertain and improbable. For you see, you are operating in defined ranges of probability, where the masses that affect are quite tame and regularly yield similar results.
Obviously, take everything with a grain of salt. However, next time you are waiting for that routine metro or bus, come away, miss it, have some tea and pay attention. I am sure you will be surprised with what goes on while you were busy in a system.