From StarTalk.

In this discussion, Neil deGrasse Tyson, joined by co-host Chuck Nice and Gary O’Reilly, explains how physicists decide which equations to use when tackling complex problems. Neil emphasizes that physics is not about memorizing formulas, but about building a conceptual “toolbox” of physical principles—from Newtonian motion to relativity and quantum mechanics—and recognizing which tools apply to a given situation, while acknowledging that some problems remain unsolved because the right equation or insight has yet to be discovered.

From ‘Confronting Neil with Our Burning Questions… Yet Again!’: https://youtu.be/-DBTGhbxL7k?si=jgn8spc6eLGXG4en

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