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In quantum mechanics, the Hamiltonian of a system is an operator corresponding to the total energy of that system, including both kinetic energy and potential energy. Its spectrum, the system's energy spectrum or its set of energy eigenvalues, is the set of possible outcomes obtainable from a measurement of the system's total energy. Due to its close relation to the energy spectrum and time-evolution of a system, it is of fundamental importance in most formulations of quantum theory.
Hamiltonian (Quantum Mechanics) - Wikipedia
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Often, as in this case, Charlie generally focuses first on what to avoid-that is, on what NOT to do-before he considers the affirmative steps he will take in a given situation. "All I want to know is where I'm going to die, so I'll never go there" is one of his favorite quips.
Poor Charlies's Almanack
Charlie Munger
We delighted in forcing bigger, slower competitors to follow us over difficult ground. Like guerillas, startups prefer the difficult terrain of the mountains, where the troops of the central government can’t follow. I can remember times when we were just exhausted after wrestling all day with some horrible technical problem. And I’d be delighted, because something that was hard for us would be impossible for our competitors.
Hackers & Painters - Big Ideas From the Computer Age
Paul Graham
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