remcob

15 ms·

91.
by remcob 7y ago
Modern cryptography libraries make sure that the execution path (and memory access patterns) do not depend on sensitive data. Usually this is what is meant with 'constant-time'. If a debugger can read out registers or memory you c
92.
by remcob 7y ago
I remember that saw blade (4:48) from when I first saw it years ago and I'll never forget it. There's something terrifying about it. Probably the rapid organic movement and complete lack of cover.
93.
by remcob 7y ago
The R0-R7 naming is pretty widely supported. For example by LLVM's assembler, so you can use it in Rust or C(++) inline assembly.
94.
by remcob 7y ago
I'll take you on that bet. Given his work on poverty, I wouldn't be surprised if he knows the approximate price of milk in supermarkts around the world . IMHO, The primary thing wealth gives you is the time and resources to under
95.
by remcob 7y ago
I wonder if the same app will allow updating those.
96.
by remcob 7y ago
True, and this is a counterexample to my claim that the parent would retain the symmetry. I think it can be refined though: The parent still has hor/ver mirror symmetries, and the solution rotated is also a solution. So there is a set
97.
by remcob 7y ago
I'd like to add an entry: Me. 42 Mendeleevication (pseudoscience): Laying things out in a periodic table to make it look scientific.
98.
by remcob 7y ago
You can see this in the flower image. The target image has a lot of symmetries (reflections, rotations) that also exist in the GoL ruleset. So must be a parent that also has these symmetries. Yet the found solution has none of these symmetr
99.
by remcob 7y ago
Thank you for this very well articulated response. I don't see why locality is a requirement. What is it that makes a theory with particles being points in a six-dimensional position-momentum space acceptable, but particles being compl
100.
by remcob 7y ago
I don't see many-world arising from decoherence, please elaborate. Decoherence doesn't give you single outcomes, but it gives you a classical probability distribution (like an enthropic ensemble) over pure quantum states, with the
101.
by remcob 7y ago
To me decoherence always seemed so obviously the solution to these 'problems in QM' that I genuinely don't understand why are still having these quasi-scientific discussions. Am I missing something or is there a ton of uninfo
102.
by remcob 7y ago
It's unclear to me from your comment whether you advocate over or under specifying the norm. "some distance" is ambiguous. In order to say "that's against the rules" but allow some leeway, you need it to be und
103.
by remcob 7y ago
I've been studying Chebfun lately, a Matlab library implementing these approximation techniques. It's written by some of the leading researchers in the field, and their documentation is so well done that it reads like a graduate t
104.
by remcob 7y ago
You don't have to take a pay cut! We from MegaCorp value excellent politicians like yourselves, if you get elected we will have many speaking and consulting opportunities for you. Just make sure that you keep doing the right thing and
105.
by remcob 7y ago
Indeed, especially considering that this is "1%-2% of all drownings". It says nothing about how many people are suffering from this after a near-drowning and subsequently recover from a near-second-drowning. For all we know more t
106.
by remcob 7y ago
I heard about about a similar (same?) method before and wrote about it here: https://ethresear.ch/t/optimizing-merkle-tree-multi-queries/... In the comments Vitalik links to his implementation.
107.
by remcob 7y ago
Good point. I find that carefully phrasing the problem is half the solution. For example, the entire field of cryptography would not have moved beyond the one-time-pad if it wasn't for a rephrasing from 'impossible' to '
108.
by remcob 7y ago
In the Byzantine Generals Problem as stated in the paper, there is a single commander that decides on the plan. Paricipants known the identity of the commander in advance. In this case signatures are sufficient. The problem you are describi
109.
by remcob 7y ago
As it says in the abstract: "With unforgeable written messages, the problem is solvable for any number of generals and possible traitors". See also chapter 4. As soon as you allow digital signatures, you have unforgeable messages
110.
by remcob 7y ago
The LLVM Kaleidoscope tutorial [0] builds up to a single file implementation. It's a very good introduction. I'd also like to offer my winning Brainfuck compiler + direct threaded VM implemented in Ethereum assembly [1]. [0] http
111.
by remcob 7y ago
You don't need any magnetic field to distinguish the north-south direction. It is simply the direction shadows are cast when the sun is at its brightest. Consequently, plants will have adjusted to it, providing many (subconscious) clue
112.
by remcob 7y ago
> To prevent integer overflow on large allocations, we use the checked_add method. If the resulting end address of the allocation is larger than the end address of the heap, we return a null pointer to signal an out-of-memory situation.
113.
by remcob 7y ago
From what a local told me, the car horns in Mumbai are by design less loud than the ones in Europe or the US. This fits my experience, but that might also be simply being used to the sound.
114.
by remcob 7y ago
I think grandparent was not about having surveillance programs or not, but about whether the government is being held accountable to it's own laws. A quality that is worryingly slipping in several nations. Hence the emphasis on 'i
115.
by remcob 7y ago
Yes, the energy required to make permanent deformations in a material is unrelated to it's kinetic energy.
116.
by remcob 7y ago
This would be challenging with modern codecs using delta frames. The only way I can see it work is precomputing all frames from the preceeding keyframe. Doable, but decent effort for a fairly obscure feature. But did video formats back then
117.
by remcob 7y ago
The way to combine hash functions for collision resistance is not composition (as with encryption) but concatenation: H'(file) = (H1(file), H2(file)). Now to have a collision on H' you need to collide both H1 and H2. But now pre-i
118.
by remcob 7y ago
Would you consider the source lost if the (minified) javascript was compiled from TypeScript?
119.
by remcob 7y ago
But we are talking about Sagittarius A*.
120.
by remcob 7y ago
For bidirectional communications you need to transmit, and this means you send out a signal that can be easily triangulated.

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