Caching isn't just hard, it adds complexity for which the costs and flaws are often obscure, especially in separate changing components and over time. Caching f

Caching isn't just hard, it adds complexity for which the costs and flaws are often obscure, especially in separate changing components and over time. Caching facts (events) isn't caching, but a legitimate copy that is forever true. Naming things is "hard", as names tend to stick forever. Later, names may miss the moving target of recent changes. Off by 1 errors, refers to the list itself (joke). You either spend extra effort reducing their possibility upfront, or get dragged into hours/days trying to dechiper only to discover it was a off by 1 error. Programming needs to be exact, to be correct, and very few are consistently avoiding such subtle flaws in code logic. When you have to explain the joke, it's not funny anymore! :D