Desrtopa comments on Configurations and Amplitude - Less Wrong

26 Post author: Eliezer_Yudkowsky 10 April 2008 07:41AM

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Comment author: Desrtopa 14 April 2012 01:42:51PM *  0 points [-]

I can't draw an electron. In fact, nobody can really draw any sort of fundamental particle. They don't look like anything. This might seem like a cop out, or a way to handwave away the fact that we don't know what they look like, but it's not. On the scale that fundamental particles exist on, the mechanisms which give rise to the phenomenon we experience as "looking like something" don't exist. An electron cannot look like anything.

I can understand something and still tell you that it makes no sense. Do you understand that? I can also regurgitate the definition of phase angles that I memorized in 1978, does that mean I understand it?

No, it doesn't.

If you insist that you understand what scientists mean when they call matter wavelike and particlelike, why don't you try explaining it? That much, I do understand, well enough that I can explain what it means I should observe regarding matter on the particle scale and what I should not, and I will be able to tell if your explanation is correct.

I also can't explain directionless arrows, because to the best of my understanding, Eliezer isn't actually talking about directionless arrows at any point. If he is, my understanding of this post is wrong. What he does talk about are arrows, figurative entities which indicate both what direction from the origin something is pointing and how far away from it is is (I'm not even going to try explaining what the origin in this context is and what it means to move away from it, not because I don't understand it, but because it would take way more time and effort than I'm willing to put in right now to make it comprehensible to you,) but although the arrows point in a specific direction, we can't tell which direction it is. Imagine an actual, physical arrow affixed to a pole in the ground, and the arrow is pointing either north or south. Imagine also that we have no way of knowing which way is north or south, we have no compass, the sky is overcast, we have no landmarks to orient by, etcetera. We do not know whether the arrow is pointing north or south, but we can still measure how long it is.

This is not a perfect analogy, but if you think of it this way you'll have a better idea of what Eliezer was talking about if you just think "directionless arrows = nonsense."