Repetition is the key to memorizing and becoming an expert in almost anything.
There’s inherent value in stories that are entirely made up. Part of the magic is that they can be subtle wrappers around tricky issues – it’s easier to discuss a sensitive topic when done within the context of an alien civilization.
Consumers have a certain amount of upgrade fatigue. It’s not uncommon for end users to ignore an update notification for months to avoid the frustration that comes with trying to fix something that worked before the update.
Testing code that leverages random numbers can be tricky. It’s useful to have a way to subvert the random number generator during tests to yield a deterministic state.
Some operations in PHP introduce uncertainty around your code’s behavior. In those situations, it’s helpful to insert helper functions that make your code more reliable and easier to test.