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Comment Re:Heat (Score 1) 20

The heat and the light are not physically different things. If the light is absorbed, then the object that absorbed it was heated by that amount of energy.

If the heat escaped, that would mean the light was reflected, and it wouldn't be black, it would be white. (Or a mirror, depending on how consistent the angle of reflection is)

Comment Re:The cognitive dissonance is so funny (Score 1) 101

It has nothing to do with small cars that the dealers will refuse to sell, it is about rolling back the crash safety standards.

Even after all these years of this shit, Americans are still to stupid to see a bait-and-switch staring them in the face. There is little hope for the future.

Comment Re:If we extract the newspeak: (Score 3, Insightful) 10

Remember that models used from a decade or more ago always make simplifying assumptions, and that those tend to be unquestioned until data shows that they must be. Even now climate models can't handle all the variables known to be needed. Turbulence is *extremely* difficult to handle. And there probably is some "butterfly effect". The way that's normally handled it to run an ensemble of models with slightly different conditions, but they may all make some of the same simplifying assumptions.

Comment Re:As the saying goes (Score 1) 42

Well, panspermia is possible, but not extremely likely. OTOH, if life started on Mars, it could well have spread to Earth on impact debris. The further away, the less likely. But remember that yeast have survived in space conditions for months, perhaps years...and that wasn't in extreme cold (though it was in inactive form).

OTOH, years is different from centuries. And for interstellar trips in a comet, centuries wouldn't be enough.

Comment Re: Life is extremely improbable (Score 1) 42

Those are descendants of LUCA. A better question would be viruses, because in that case we don't really know. (There aren't any ribosomes. [OTOH, if there are descendants of another origin, they've massively adapted.])

OTOH, we haven't checked all life on earth. So assertions about universals should be viewed with that in mind.

Comment Re:Life is extremely improbable (Score 1) 42

No. The mapping of nucleotide sequences onto amino acids isn't predetermined. We've built in the labs versions that are different.

OTOH, the argument still isn't good. It could be a low, but not extremely low, probability. In that case the first one to show up could have a VERY strong advantage. And we haven't checked all life on Earth, so the assertion that they are all the same hasn't really been proven, either.

We are pretty certain that the appearance of life involved some very low probability events, but that there were a lot of environments around with lots of different samples for a long period of time, so a "low probability event" should be expected to show up (even if not any particular low probability event).

Comment Re:Meanwhile (Score 1) 86

Different groups of people designate street crossings and manage school buses. Ideally you're right, it should be fixed. Now get two different groups of people with different priorities to agree.

If you don't like the rule, manage it with school bus routing, but prepare to need twice as many route miles along lots of segments.

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