I’ve just had a thought: the cake is a lie:eek:
Isn’t that just what physicists do, when they measure masses of particles in “electron-volts”?
Yup. Conscientious physicists will usually try to include a footnote at the start of a paper saying that they’re using units where c = 1 (and also usually any other fundamental constants that happen to be relevant, such as hbar, G, Coulomb’s constant, Boltzmann’s constant, etc.).
I think Heisenberg addressed that quite adequately: it makes perfect sense until you read it (the observer effect). You can understand where each word is, or where the sentences are going, but not both.
Or something like that.
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Actually, it’s quite possible for relativity to become intuitive, once you’re familiar enough with it. Everything in relativity is basically just a generalization of the concept of rotation, and once you realize that, most of your intuition about rotation applies, possibly with some minor tweaks.
Now, quantum mechanics is another story. You can still make progress in quantum mechanics, and a lot of the “weird” things in quantum aren’t actually so weird after all if you approach them right… But as Feynman once said, anyone who understands quantum mechanics, doesn’t understand quantum mechanics.
QM is quite a neat little theory, until you try to apply it to real things.