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Comment Re:Gun-free zone? (Score 1) 1165

Mass-shooters are not criminals, they are mentally ill.
And there are a lot for shades between criminals with free access to guns and criminals without access to guns. Personally, I'll prefer criminals to have as much trouble as possible obtaining gun, and for common psycho it is better to be near impossible without committing a crime, so he could be caught before shooting starts.

Comment Re:It's true (Score 3, Insightful) 616

Unfortunately, high school math isn't "basic understanding", it's in fact advanced. Most people do not have any idea how to multiply matrix to vector, or that matrix may be multiplied to something, or that matrix isn't just movie title. Or how parabola and hyperbola differ. Basic understanding is fourth-grade arithmetic (mentioned in the article) and this is absolutely not enough.
Sure one can code without learning math. And one can play in trash movies without learning acting. So much as I can apply a cast to someone's broken leg guided by google search result, but really should not unless we are in the middle of the zombie apocalypse. And I (and most people) should not sing in the opera even in the middle of the zombie apocalypse.

Comment Re:Too late, too little (Score 1) 272

Look at the Orion project, they intended to use this bombs in thousands. With much weaker payload, but the mass of the ship is a few orders of magnitude less too. I seriously doubt 20 nukes would be enough for any really dangerous thing at the range we can be sure if it would hit the Earth or not.

Comment Re:Effect of nukes on NEOs (Score 1) 272

Same hit spread over entire hemisphere probably would be much less catastrophic: small objects will burn in atmosphere instead of bringing their kinetic energy down to earth. We can hope for a hot summer instead of tsunami followed by a long "dust winter". The problem is how to blow up this NEO to the small enough pieces.

Given our nuclear stockpiles, I'd rather build big enough Orion spacecraft and just ram the thing. It may be enough to make it miss if hit early enough. Earth is quite small and fast moving target after all.

Comment Re:No one cares (Score 4, Informative) 830

In metric, one milliliter of water occupies one cubic centimeter, weighs one gram, and requires one calorie1 of energy to heat up by one degree centigrade — which is 1 percent of the difference between its freezing point and its boiling point. An amount of hydrogen weighing the same amount has exactly one mole of atoms in it. Whereas in the American system, the answer to ‘How much energy does it take to boil a room-temperature gallon of water?’ is ‘Go fuck yourself,’ because you can’t directly relate any of those quantities.

No big deal, right. Unless you want to actually calculate something.

One picture is worth 128K words.