Tell us more of your 4th grade social studies stories.

We've banned this account for repeatedly posting uncivil, unsubstantive comments to HN.

it seemed quite substantive to me...of course, it goes against the mainstream politically correct paradigm, too.

Those first two were the first novels I read and had a massive impact on me.

Please stop posting uncivil and unsubstantive comments to HN.

Economic calculation problem

I like you very much.

Why are almost all impact craters perfectly circular?

I'm not a physicist, but I would hazard:

it would require a very non-spherical object to create an a-circular crater because ground resistence forces material to move primarily parallel to the surface of the planet/moon, which tends to regularize the shape. Any atmosphere will make the impacting object more spherical through resistance. Lastly, large bodies in space tend to spheres naturally as their mass converges by gravity.

Nobody here is going to like this comment but I recommend you look into Electric Universe theory and Plasma Cosmology.

It all sounds rather pretty but I'm not aware of a single testable hypothesis associated with it, or at least a testable hypothesis that anyone is willing to put forward and have immediately demolished. The Rosetta mission should have turned up some intense magnetic field readings if the Electric Universe theory is true . . . but it didn't. Then again the only people I know who espouse the theory can't begin to explain what electromagnetic fields are anyway.

Care you explain why exactly you think this stuff is worth considering? I have to admit, I'd never heard of either before now, but a quick reading of the Wikipedia page on Plasma Cosmology does not leave me with much enthusiasm for the topic.

I looked and Wikipedia has "As of 2015, the vast majority of researchers openly reject plasma cosmology because it does not match modern observations".

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