Beliefs need software updates too. Running a middle-school opinion on college-level information causes crashes.

Opinions formed early stay in place long after the information behind them has gone stale. They do not feel old from the inside; they feel like plain common sense. The trouble appears when a view built for a simpler picture meets a more complicated one and starts producing answers that do not work. Revising is maintenance, not disloyalty to your younger self.

Take one thing you are certain about and go find the strongest argument against it. Read it properly rather than hunting for the flaw. Then decide what you actually think now.