jbotz

13 ms·

91.
Dark Energy Is Misidentification of Variations in Kinetic Energy of Expansion(sci.news)
4 points by jbotz 2y ago|0 comments
92.
by jbotz 2y ago
Pretty amazing... the market overall for consumer digital cameras has crashed over the last decade due of course to smartphones making a dedicated camera kind of redundant for the majority of consumers. But Leica shows that even in a crash
93.
by jbotz 2y ago
Fusion is irrelevant as a practical energy source here on earth. The simple reason is that we already have all the "fusion energy" we'll ever need from that big fusion reactor in the sky... modern photovoltaics convert this
94.
Bye-bye microplastics: new plastic is recyclable and ocean-degradable(eurekalert.org)
9 points by jbotz 2y ago|0 comments
95.
by jbotz 2y ago
Depends on how you define feasible. Take Wolfram's 1-dimensional cellular automata... some of them have infinite complexity, and of course you can "run" them for infinite time, and the "current" state is constantly
96.
by jbotz 2y ago
TLDR: All energy usage produces waste heat, and while right now the planetary heating from altering the atmospheric composition (GHG emissions) dwarves that from waste heat, even if we were to switch all our energy production to "gree
97.
Waste Heat and Habitability: Constraints from Technological Energy Consumption(arxiv.org)
2 points by jbotz 2y ago|1 comments
98.
by jbotz 2y ago
This is not correct. Most plants get their N from nitrates or ammonia salts, and only some plants (mostly leguminous ones) use a direct symbiosis with nitrogen-fixing bacteria to produce these from atmospheric N2. Most of the N in natural
99.
by jbotz 2y ago
Yes... the materialist says that consciousness is a manifestation of the material brain. But if the brain is a kind of computer the best formalism for it we have so far is the turing machine, which we know from cellular automata to be able
100.
by jbotz 2y ago
The paradox only exists if you start with philosophical materialism, i.e. the assumption that reality is material in nature and mathematics is just something we use to describe the material reality. If you're not a materialist than th
101.
by jbotz 2y ago
I've been on the same trip as this guy for the last couple of decades. I haven't tried to write it up as scientific papers, but I've been actively looking for refutation of some of the key insights that lead down this path o
102.
by jbotz 2y ago
Paywalled. But forget the article and just go to the Four Thieves Vinegar Collective's web site and you'll get mo betta info: https://fourthievesvinegar.org/
103.
The Moss That Could Terraform Mars(nautil.us)
3 points by jbotz 2y ago|3 comments
104.
by jbotz 2y ago
I don't think it's really the case that "much of this discussion assumes" certain behaviors as being indicative of consciousness. Rather, it has been the case until recently that behaviorists pointed to various behavior
105.
by jbotz 2y ago
Less advanced in symbolic thinking and communicating. There are other forms of thinking (like fast tactical thinking, some predators are conceivably better at this than most humans) and communicating (emotional communication; if we could
106.
by jbotz 2y ago
I agree but would word that as "...more conscious than most other animals." Humans are animals, and we don't have an agreed upon definition of consciousness that would allow us to quantify it so precisely that we can be
107.
Radiative cooling and indoor light management by metmaterial(nature.com)
2 points by jbotz 2y ago|0 comments
108.
by jbotz 2y ago
Insurance actuary. Math degrees are mandatory in the insurance industry all the way to the C-suite.
109.
by jbotz 2y ago
> What am I missing? The scale. The reason to build a Dyson Sphere (or Swarm) is that you want all (or at least a large fraction) of the energy output of a star. To "build decentralized fusion reactors" that can provide the sa
110.
Contextual and combinatorial structure in sperm whale vocalisations(nature.com)
2 points by jbotz 2y ago|0 comments
111.
by jbotz 2y ago
> magnesium level reported in a blood plasma test is worthless. This is true, and the reason is more interesting and illuminating than what you stated here. Blood magnesium levels are a significant part of how your body regulates the sp
112.
by jbotz 2y ago
Paper: https://onlinelibrary.wiley.com/doi/10.1002/aenm.202400190
113.
Bessy II: How pulsed charging enhances the service time of batteries(helmholtz-berlin.de)
2 points by jbotz 2y ago|1 comments
114.
by jbotz 2y ago
Probably, but there is some evidence that Australian aboriginal oral traditions have preserved information for at least 16,000 years or so, i.e. well into the last ice age. IIRC there are two specific instances, one involving astronomical
115.
by jbotz 3y ago
The first photo seems to have a ruler besides the flowers, with each line probably being a millimeter. The whole inflorescence (stalk) with hundreds of flowers would thus be a few centimeters in length.
116.
by jbotz 3y ago
Huh? Bats have most of those those, more than most other mammals their size.
117.
Vasopressin deficiency: driver of social impairment and fluid imbalance in ASD? [pdf](med.stanford.edu)
137 points by jbotz 3y ago|101 comments
118.
by jbotz 3y ago
Also, all the aquatic animals have one rather serious obstacle to developing an advanced/technological society: no way to make/use fire. Personally I think the only thing that really categorically distinguishes humans from other
119.
by jbotz 3y ago
I think your attitude is very condescending and really misguided and counter-productive. Yes, of course the modern scientific method is superior to what came before, but it was what came before that got us to the modern age and kick-starte
120.
by jbotz 3y ago
That "no" is not so unequivocal. TOTPs have two use cases... 1) to prevent replay attacks, 2) as a second factor. While passkeys do the same as TOTPs for #1, they don't by themselves address #2. You may still want to use a

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