cbkeller

33 ms·

301.
by cbkeller 8y ago
> So does this imply that we'll never know if the Cambrian Explosion is actually an explosion or just a continuation from a previously unrecoverable geological record? Is it even possible to have complex multicellular life under sn
302.
by cbkeller 8y ago
Ah yeah. That crater is about 30 km wide, which is pretty big. Most craters follow roughly a 1:10 scaling between depth and diameter [1], so we can approximate a 3 km initial depth for this new new Hiawatha Crater. This crater is quite youn
303.
by cbkeller 8y ago
Good questions! 1) Perhaps counter-intuitively, it's generally thought to be easier to enter a Snowball state when most of the continents are at the equator, the reasons being (A) silicate weathering of the continents consumes CO2 and
304.
by cbkeller 8y ago
I'm the first author of the relevant study [1] (open-access) so I'm biased to think this is cool. The unconformity certainly isn't everywhere (in some places there is no missing crust or time at all), but it can be found on j
305.
Earth is missing a huge part of its crust. Now we may know why(nationalgeographic.com)
16 points by cbkeller 8y ago|6 comments
306.
by cbkeller 8y ago
That is apparently also a significant problem in Japan [1], so I'm not really sure what to think as far as which region should take the prize for longevity. [1] https://www.nytimes.com/2010/08/15/world&#x
307.
by cbkeller 8y ago
I think there's a few digits missing here even. 1 mol = 6.022E23 particles = 22.4 L at STP for an ideal gas, and 1 m^3 = 1000 L Of course real air isn't quite an ideal gas, but some reasonable approximations [1] come out to 2.53E2
308.
by cbkeller 8y ago
You're certainly right that "EULA" is ambiguous -- but Bryan provided a more specific definition which was pretty clearly concerned with the "contract law in addition to copyright law" part: > EULAs are an attemp
309.
by cbkeller 8y ago
Do you care to support that assertion? It reads very much like one. > BY INSTALLING, DOWNLOADING, ACCESSING, USING OR DISTRIBUTING ANY OF THE SOFTWARE, YOU AGREE TO THE TERMS AND CONDITIONS OF THIS AGREEMENT. IF YOU DO NOT AGREE TO SUCH
310.
by cbkeller 8y ago
> In our opinion, the facts we have presented suggest that existing models of commodity money, which assume well-informed agents, are not capable of successfully confronting the facts we present. A potentially fruitful line of research
311.
by cbkeller 8y ago
Yeah, this is the #1 thing people get wrong about STEM grad school. Not only is tuition 100% covered, you get a stipend that's usually 20-30k per year depending on local cost of living. Masters is completely covered too if you go in to
312.
by cbkeller 8y ago
It's a bit better than that from my reading: that quote's for He-3, which we don't expect to show any supersolidity (it's a fermion) unless the He-3 nuclei start forming pairs (the pair would have integer spin) -- whic
313.
by cbkeller 8y ago
This may be a bit mangled from the last time I took a relevant class, but my recollection is that the "real" reason electrons can't share the same state is that they're what's called antisymmetric with respect to e
314.
by cbkeller 8y ago
My point was that at the relatively evidence-free level of discourse seen in the article, we could equally well paint straight-A students as anything from conformist (as the article claims) to subversive. In my limited TAing experience, the
315.
by cbkeller 8y ago
The article mentions that this push to collect biometric information is happening at the same time as biometric information is being used more frequently in device security. While I don't know if it's reasonable to think DHS is su
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by cbkeller 8y ago
Yeah, there's a ton of BS in here IMO. For instance > Getting straight A’s requires conformity we could equally easily reach the opposite conclusion with an equally bald assertion that "getting straight A's requires an abi
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by cbkeller 8y ago
Sounds fair enough to me
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by cbkeller 8y ago
Let's try applying the same logic to another field. "Without another solar system to act as a control, and astronomical timescales in which to perform the experimentation, the science is bunk. Our understanding of the solar system
319.
by cbkeller 8y ago
Pretty scary that it seems to have happened this fast!
320.
by cbkeller 8y ago
> We're lucky to get 10Ma uncertainty for 100Ma old formations. Maybe a few decades ago. Ironically, much of my background is in U-Pb CA-ID-TIMS geochronology. The current state of the art in my community is between 0.05 and 0.01 %
321.
by cbkeller 8y ago
Your flagged post began with an allegation of bad faith against the entire field of climate science. edit: looks like it's not even flagged anymore.
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by cbkeller 8y ago
Coming from a geologist, you're exactly right!
323.
by cbkeller 8y ago
Yeah, this is a new development: > United States emissions are expected to rise 2.5 percent this year after several years of declines > “We thought oil use had peaked in the U.S. and Europe 15 years ago,” he said. “The cheap gasoline
324.
by cbkeller 8y ago
I see Spinoza, I upvote :) To give the benefit of the doubt I'm not sure if OP was objecting to the first step of placing a person or company along a good-bad continuum or the second step of reducing that continuum to a binary label. I
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by cbkeller 8y ago
> if everyone good leaves organizations because they're "bad," well, those organizations will just be filled with the worst of us soon enough. Is this not potentially an optimal outcome? If companies who have a track reco
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by cbkeller 8y ago
Public relations -- bad press. Here's some more context from the BBC article: > Facebook had been aware that an update to its Android app that let it collect records of users' calls and texts would be controversial. "To mi
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by cbkeller 8y ago
This is public and traceable to my real identity right now. I've always had legal access to the content I need personally, so I've never had to actually use sci-hub -- but I appreciate that it's a huge equalizer for those les
328.
by cbkeller 8y ago
For a bit more context, my favorite article on the topic: https://www.theguardian.com/science/2017/jun/27/profitable-b... tl;dr: Scientific publishing wasn't always like this. Publication was run mo
329.
by cbkeller 8y ago
Surprised by the cynicism here. I'm a scientist, and I'm a fan of what she's done. I think most of us probably are, actually.
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by cbkeller 8y ago
Well, I think that's a reasonable analogy, except that with spoken language evolution, the unintelligibility tends to be mutual, whereas with Fortran there's substantial compatibility in one direction (i.e., GFortran will happily

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