tiny-tim
Science Advisor
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Drakkith said:As your tiny sized text at the bottom says, they aren't real(which I agree with), so why is this even an issue?
because the main advantage of Feynman diagrams is that they have an intuitive description in terms of "virtual particles"
an intuitive description helps understanding (and memory)
but it's important to know what the limits of the description are
(eg, most aspects of quantum theory have a classical analogue with the same name … giving the same name helps understanding … but occasionally the analogy doesn't work, and it's important to remember when)