remcob

14 ms·

121.
by remcob 7y ago
AFAIK, the Libra design is very centralized (which follows from the throughput requirements). All usage of it would be through Facebook's servers. So that would be where you can implement any censorship.
122.
by remcob 7y ago
A book like the "Neuromancer" really needs to be understood in it's time. If you read it now, it will look very clichéd. But that's because it introduced and popularized those very clichés! A lot of really significant cu
123.
by remcob 7y ago
7z is a generic lossless compressor. These algorithms tend to specialize in exact repeating patterns in sequences. Good for english prose, but images tend to have non-exact patterns in two dimension. A dedicated algorithm like FLIF will be
124.
by remcob 7y ago
As others have explained in this thread: Yes, easily, the projection is that population will top off soon and start declining. It is unlikely (frankly ridiculous) that we will go extinct in the next few decades because of overpopulation. Al
125.
by remcob 7y ago
This is a rude misconception. Family size is mostly related to child mortality rates. In better off places the population growth is neutral or negative and evidence suggests this is causal, so better circumstance lead to _less_ growth, not
126.
by remcob 7y ago
This only looks at energy consumed during production, not at (long term) availability of raw materials. It seems reasonable to assume that long term the cost of energy and recyclables will go down and that of non-renewables such as oils and
127.
by remcob 7y ago
Per capita amounts are more relevant here: 442B in Germany is 5K per capita. 3498B in the US is 11K per capita. So the spending difference is even more in US's favour.
128.
by remcob 7y ago
I generally avoid meat for this and other reasons, but the Kea for sure don't seem to care about animal rights: > The video confirmed what many scientists had long suspected: that the kea uses its powerful, curved beak and claws to
129.
by remcob 7y ago
> Each time a node has an internal event, it hashes that event with k hash functions and increments its bloom filter. Isn't this effectively the same as generating k random indices? In other words, would the bloom
130.
by remcob 7y ago
> It's a 10-year-old recombination of 20-year-old tooling. Merkle trees and hashcash. That's it. This is an unfair characterization. Every technology can be described as a recombination of what existed before. Bitcoin solved t
131.
by remcob 7y ago
> For this reason it is safest to break sodium lights under water [...] This sounds like dangerous advice. Sodium reacts exothermically with water producing NaOH. In practice this means it will violently boil and splatter strongly alkali
132.
by remcob 7y ago
It.. doesn't work like that. Suppose someone sells you a private key, or even a hardware wallet, claiming that it "contains much Bitcoin". There's no way for you to be sure that the seller doesn't have a backup. Or
133.
by remcob 7y ago
Not necessarily. Because C allows the pointer manipulation, the compiler can in general not make assumptions about pointer aliasing. This prevents some optimizations. In Rust, the compiler has more information/control over memory layou
134.
by remcob 7y ago
Likely they can recover something like `private_key XOR nonce`. If you know a few bits of the nonce, you can reveal bits of the private key. But this is not something you can brute-force. In other words, the nonce bits leak information abou
135.
by remcob 8y ago
Title makes it sound like a bug is discovered. The 'trapdoor' is in the protocol by design. A lot of zero knowledge proof protocols have an initial setup phase in which values are created that need to be forgotten for the system t
136.
by remcob 8y ago
> A lot of people now import devices from countries with different frequencies causing a mess. If they are already using devices that are not compliant with EU regulations, then I don't see how stricter regulations would solve this.
137.
by remcob 8y ago
We have existing regulations stating what is allowed on which frequencies. Is there evidence that the devices prohibited by the proposal lead to widescale breaking of these regulations? And if so, is there evidence that this causes harm? It
138.
by remcob 8y ago
Multiplication in decimal systems is inefficient. FFT multiplication works by converting the numbers to and from a more efficient representation where multiplication is O(n) and embarrassingly parallel (convolution vs pointwise multiplicati
139.
by remcob 8y ago
This is very similar to Montgomery reduction [1]. Both do a multiply taking low bits followed by a multiply taking the high bits to reduce a number. Montgomery reduction requires an augmented number system with conversions to and from. The
140.
by remcob 8y ago
"An app designed for readers." Ironic.
141.
by remcob 8y ago
Is there court precedence of a vendor (for example a bank) being held responsible for customer loss due to relying on SMS for 2FA? The insecurity of SMS needs to have way more awareness and vendors need to feel it in their pockets for this
142.
by remcob 8y ago
FLIR Camera has many good uses. I bet in a hot or cold climate you can quickly win it back in heating/cooling costs by optimizing insulation.
143.
by remcob 8y ago
They are designed for close up work, almost microscope like as you can see in the demo video. I wonder how well they work for a living-room sized scene.
144.
by remcob 8y ago
$100k in equipment, but I bet none of that went to an oscilloscope to actually quantify the problems they are imagining.
145.
by remcob 8y ago
The graph in the article was made using a 30m dish, which I would not consider DIY territory. The referenced article is a study on what size dish is required with a RTL-SRD. Their conclusion is a minimum of 6m dish is required with simple p
146.
by remcob 8y ago
Ever since I heard about the first Pulsar clock in Dansk [1] I've been wondering what it would take to DIY one. Unfortunately, documentation on the Dansk clock is nonexistent, giving me little to start on. I hope ESA documents and open
147.
by remcob 8y ago
I wish we could show real bandwidth, latency and drop rate instead. Even better, have industry agree on minimum values for one bar to four bars of connectivity. And gradually upgrade these requirements over time. All these names just confus
148.
by remcob 8y ago
Gravity on Venus is 0.9 that of Earth, but it's atmosphere on the surface is 90 times as dense. Surface gravity doesn't say much about atmospheric density (the mass of the atmosphere does).
149.
by remcob 8y ago
I like to go one step further and use a first pass to convert bytecodes to a list of labels. Use a pointer in this list as the program counter. Then the dispatch becomes as simple as: goto *pc++; Here's an example of the techn
150.
by remcob 8y ago
Look at the two examples where k is used with β being a String or a List. And now combine the two examples, this would force β to be simultaneously String and List -- impossible. A type parameter is not what we want here. The return type of

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