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Short summary

The article explains why debuggers can mislead by showing only a single moment in time while software state changes continuously. It covers common scenarios where stale state, async timing, and environment issues (hot reload, cache, service workers) cause bugs invisible to the debugger. Practical habits include watching full program flow, checking values around async work, clearing cache, and comparing local vs production behavior.

• •Debuggers show one moment in time; real bugs often live in state changes before or after that moment
• •Stale state, async timing, and environment issues (cache, hot reload, service workers) cause invisible bugs
• •Practical fixes: watch full flow, log around state changes, clear cache, compare local vs production behavior

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