spekcular

6 ms·

1.
Chlormequat in food and urine from adults in the United States from 2017 to 2023(nature.com)
92 points by spekcular 3y ago|74 comments
2.
Making every researcher seek grants is a broken model(rootsofprogress.org)
3 points by spekcular 3y ago|0 comments
3.
A new Lean formalization project for the Prime Number Theorem(mathstodon.xyz)
1 points by spekcular 3y ago|0 comments
4.
Lean in 2024(xenaproject.wordpress.com)
2 points by spekcular 3y ago|0 comments
5.
by spekcular 3y ago
Is the "optimal Julia workflow" written down anywhere?
6.
You Should Be Working on Hardware(caseyhandmer.wordpress.com)
12 points by spekcular 3y ago|6 comments
7.
An Old Conjecture Falls, Making Spheres a Lot More Complicated(quantamagazine.org)
129 points by spekcular 3y ago|80 comments
8.
Absence of superconductivity in LK-99 at ambient conditions(arxiv.org)
142 points by spekcular 3y ago|75 comments
9.
by spekcular 3y ago
You may be interested to know that this exact objection has been made in the philosophical literature. See "Causal Fundamentalism in Physics" by Zinkernagel (2010). Available here: https://philsci-archive.pitt.edu/
10.
Successful room temperature ambient-pressure magnetic levitation of LK-99(arxiv.org)
2408 points by spekcular 3y ago|1199 comments
11.
Electronic Structure of LK-99(arxiv.org)
551 points by spekcular 3y ago|432 comments
12.
Pb-apatite framework as a generator of possible superconductivity(arxiv.org)
3 points by spekcular 3y ago|1 comments
13.
Synthesis of possible room temperature superconductor LK-99(arxiv.org)
3 points by spekcular 3y ago|0 comments
14.
Semiconducting Transport in LK99 reproduction attempt(arxiv.org)
613 points by spekcular 3y ago|255 comments
15.
by spekcular 3y ago
The author is a professor at Ohio State University, specializing in condensed matter theory. His CV list two works on superconductors and a dissertation on supercapacitors.
16.
by spekcular 3y ago
There's also a C-R bound for the biased case.
17.
by spekcular 3y ago
But here the issue is the uncorrected multiple testing and under-reporting of results, not the p-values themselves. Any criterion for judging the presence of an effect is going to suffer from the same issue, if researchers don't pre-re
18.
by spekcular 3y ago
AIC is an estimate of prediction error. I would caution against using it for selecting a model for the purpose of inference of e.g. population parameters from some dataset (without producing some additional justification that this is a sens
19.
by spekcular 3y ago
How else do you propose to construct procedures that control type I error and evaluate their properties?
20.
by spekcular 3y ago
I don't understand. CIs are equivalent to computing a bunch of p-values, by test-interval duality. Should I interpret your points as critiques of simple analyses that only test a single point null of no effect (and go no further)? (I
21.
by spekcular 3y ago
The items you listed are certainly problems, but p-values don't have much to do with them, as far as I can see. Poor power is an experimental design problem, not a problem with the analysis technique. Not reporting all analyses is a da
22.
by spekcular 3y ago
I think if hypothesis testing is understood properly, these objections don't have much teeth. 1. Typically we use p-values to construct confidence intervals, answering the concern about quantifying the effect size. (That is, the confid
23.
by spekcular 3y ago
Is there a modern reference you would recommend?
24.
by spekcular 4y ago
My argument is that key claims of the paper are factually incorrect. For example, there was no "confession" by Karplus and Kroll. (At least, none is cited as far as I see - please let me know if I am missing something.)
25.
by spekcular 4y ago
If a mathematical technique helps understand and predict nature, why not use it? The quote criticizing the method misunderstands it. It's certainly not "wrong" or "absurd." I dislike the paper because it is sensatio
26.
by spekcular 4y ago
This has already been posted a few times: https://news.ycombinator.com/item?id=31431033 The summary is that the author doesn't know what he's talking about.
27.
Why dark matter feels like cheating (and why it isn’t)(4gravitons.com)
52 points by spekcular 4y ago|129 comments
28.
by spekcular 4y ago
I see - I understood "liberal arts program" above to mean a liberal arts college in general (typically offering a mathematics major). I agree that this reading list is better suited for something like "history of math for hum
29.
by spekcular 4y ago
Yes, it is substantially different with respect to content than standard undergraduate mathematics programs. It covers a few historically important texts and does not teach (if those texts are any indication) most of what is usually taught
30.
by spekcular 4y ago
I believe the person you're replying to understands that. The claim is that this approach is really bad way to learn math. As someone who has learned and taught a lot of math, I agree with that claim.

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