cbkeller

29 ms·

241.
by cbkeller 7y ago
Ok, thanks for clarifying! Is that part of why you got out of the field?
242.
by cbkeller 7y ago
> and thus not inherited trans-generationally I'm not sure what you're referring to here? There appears to be quite a significant body of literature on epigenetic inheritance -- just to pick a few: [1,2,3,4]. The term "Tra
243.
Inherited Learning? It Happens, but How Is Uncertain(quantamagazine.org)
73 points by cbkeller 7y ago|37 comments
244.
by cbkeller 7y ago
Things are still improving, but I already find it quite usable in practice. Yes, precompilation can take a while, but once you start using the language regularly you hardly notice it, since you only need to re-precompile after installing up
245.
by cbkeller 7y ago
Totally. As Mourou puts it in the talk, "we are boiling the vacuum!" Going of the figures in the talk, it looks like he would be counting on ultrashort pulses that are well into the realm of relativistic optics, and possibly appro
246.
by cbkeller 7y ago
To be fair, it looks like what he's proposing is fundamentally different from inertial confinement fusion. Inertial confinement with lasers is so hard because it's so tricky to apply perfectly even, symmetric force on every side o
247.
by cbkeller 7y ago
Eh, there's also usually a lot less money on the line in academia. I would bet that this particular type of problem is positively correlated with potential commercializability.
248.
by cbkeller 7y ago
I don't know anything about the folks behind that website, but a quick survey of the literature would lead me to expect a scientific consensus that the placebo effect is absolutely physiologically real. Just to pick one particularly in
249.
by cbkeller 7y ago
Yes of course, I just would have assumed the cost of that is pretty minor compared to the cost of the (apparently) 26 megawatt cogeneration plant
250.
by cbkeller 7y ago
Wow, that's annoying, too bad that they wouldn't have a way to disconnect. IIRC, Princeton was able to operate some buildings off of the cogen plant during Hurricane Sandy, so I guess they had things engineered differently.
251.
by cbkeller 7y ago
Many universities have "cogeneration" plants that produce electricity, steam for heating, and also hot water. However, they usually don't generate enough electricity to power the whole campus, so the administration chooses wh
252.
by cbkeller 7y ago
For academic scientists, it's not always up to us. Just going out and renting a generator and hooking that up to our instrumentation ourselves may be technically possible (plus or minus various building code and safety issues), but by
253.
by cbkeller 7y ago
One may or may not like it, but that is literally how language works.
254.
by cbkeller 7y ago
I sympathise, but for better or worse the OED reports that people have been using "literally" to mean "figuratively"* since at least 1769: > 1769 F. Brooke *Hist. Emily Montague* IV. ccxvii. 83 "He is a for
255.
by cbkeller 7y ago
> "Stallman.org was defaced by an FSF employee,” I have just been told, “the deface has been reverted, and the domain appears to now be operating on non-FSF infrastructure…” Huh
256.
by cbkeller 7y ago
Going off of wikipedia, it looks like Julia started in 2012, two years before Crystal.
257.
by cbkeller 7y ago
I think this [1] is the latest on static compilation -- they're working on it [1] https://github.com/JuliaLang/PackageCompiler.jl
258.
by cbkeller 7y ago
Release notes: https://github.com/JuliaLang/julia/blob/v1.2.0/NEWS.md
259.
by cbkeller 7y ago
Cerro Rico is a crazy place, geologically speaking. Apparently around 800 million ounces of silver (22,695 metric tons) were produced between 1545 and 1823 [1], and even after about half a millennium of mining it still has another 1.7 billi
260.
by cbkeller 7y ago
That's an interesting question. Fe and P are probably the most relevant nutrients that are abundant in suspended glacial rock flour. Since Fe3+ is pretty insoluble in seawater, the suspended (vs. dissolved) load might actually matter -
261.
by cbkeller 7y ago
? Assuming you meant to reply to me, I think this is orthogonal to what I posted ETA since we seem to have reached maximum comment depth: To clarify, the context suggests you mean to disagree with me, but I don't see any incompatibilit
262.
by cbkeller 7y ago
Eh, I mean the silicate weathering feedback will definitely fix the CO2 issue on Myr timescales, but doesn't mean it mightn't be a bumpy ride. Then there's the issue of above-background extinction rates -- not entirely a CO2
263.
by cbkeller 7y ago
Lot of silt in that water! There has been some interesting debate recently on the efficacy of glacial erosion under the Greenland ice sheet -- and more broadly whether or not global average erosion rate has increased due to northern hemisph
264.
by cbkeller 7y ago
Geologist here -- the delayed-evolution-of-lignase hypothesis has been criticized in the literature recently [1], but I'd say the jury's still out. [1] https://doi.org/10.1073/pnas.1517943113
265.
by cbkeller 7y ago
Ah, didn't realize slicing always made copies. A view/alias/whatever would have been fine for the example, but having multiple variable names referring to the same memory has caused me enough problems to try to avoid it by de
266.
by cbkeller 7y ago
Not my exact area of expertise, but my two cents would be that the model space is sufficiently vast and underconstrained that there are likely an infinitude of equally allowable models that could also explain these features without an LHB.
267.
by cbkeller 7y ago
Yeah, that's it -- since the first solid material also means the first material we can determine an age of!
268.
by cbkeller 7y ago
Yeah, even though the two aren't necessarily mutually exclusive, among folks I know who work on this there's a pretty good (subjective) correlation between favoring an old age for the moon and being skeptical of the LHB.
269.
by cbkeller 7y ago
Geologist here -- this has been an active topic lately! Just a few weeks ago there was a paper proposing a 4.336 +/- 0.031 Ga age for the Lunar Magma Ocean [1], which is often equated with (esp. in public press [e.g., 2], though not re
270.
by cbkeller 7y ago
The initial precompilation times may give some new users the wrong idea, but those have been for me a total non-issue once I'm using the language regularly.

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