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Can Physics Ever be Exact? The Problem with Perturbative Calculations.

Can physics ever be exact? Most physical theories are too complex to give precise answers. To deal with this, physicists often use a method called perturbative expansions to simplify their calculations. This method trades some accuracy for simplicity, making the results easier to work with. But could this approach sometimes lead to wrong results? It turns out that some physical phenomena can't be calculated this way, suggesting that our theories might not be complete. Scientists are working on ways to fix this, but it might mean we need to change our theories quite a bit. In this episode, we explore the need to simplify physics calculations, the trade-off between simplicity and accuracy, the problems this can cause, and possible ways to improve our understanding of the universe.