(Please note that I was specifically talking about "linked" lists: when we use them, their "linked" part rarely matches something in the real-world) OK, let's

(Please note that I was specifically talking about "linked" lists: when we use them, their "linked" part rarely matches something in the real-world) OK, let's go for more examples of well-used classes not representing real-world things: a solver, an interpreter, a compiler, an AST, an arithmetic expression, a grammar, a saved game, a DSP filter, a target architecture, a process, a thread, an AI script, ... My "Rocket" example isn't a strawman, it's a counter-example. You can ignore the audio rendering part if you don't find it plausible.