Before Was At Least Cheaper

Oh, how the times have changed! In 2020, we were writing our own isOdd() function with a cascade of if statements like absolute savages. Fast forward to 2025, and we're just outsourcing our brain cells to OpenAI's API. Sure, the 2020 approach was inefficient and borderline ridiculous (just use num % 2 !== 0, you monsters!), but at least it didn't cost $0.002 per API call. Progress? Maybe. But our wallets are definitely feeling the difference between "free but stupid" and "smart but expensive." The real tragedy is that somewhere out there, a junior dev is actually implementing this in production right now.