Zaak

If I had a big test coming up, I wouldn't experiment with fasting on the day. However, if you've been fasting while studying and you find it to be a help, then fasting the day of the test is probably a good idea.

Fasting is a periodic religious observance for me. The main effect I have noticed is increased irritability, but then I've never done cognitive tests while fasting.

> the principle of free speech does not entitle anyone to an audience

Indeed. My response in such situations is, you can say what you want, but you'll need to get your own printing press, you can't use mine.

He had no leg to stand on, using someone else's resources to say things they didn't want said.

You can try: http://www.arrl.org/advanced-call-sign-search

I don't know if they include inactive licenses though.

I believe so. I had assumed you were referring to the general case, sorry about the misunderstanding.

Can you phrase that question in a way that takes relativity into account? In particular, what do you mean by ticks being synchronized between two observers, when there's no such thing as objective simultaneity?

> protect him from the dangers he doesn't yet know exist or may not yet understand

This is the big one for me. My job is not primarily to protect my children, it's to prepare them to be functioning adults. To that end, I protect them from dangers that they're not yet ready to face, while teaching them skills to recognize and handle the dangers eventually.

Have you discussed pornography with your stepson? If you haven't seen it already, https://fightthenewdrug.org/ is a good resource.

No, this device is explicitly not one of those:

> The system, based on relatively new high-surface-area materials called metal-organic frameworks (MOFs), can extract potable water from even the driest of desert air, the researchers say, with relative humidities as low as 10 percent. Current methods for extracting water from air require much higher levels ... above 50 percent for dew-harvesting refrigeration-based systems

The MIT team explicitly addresses the limitations of refrigerated dew collection systems and claim that their system does not share those limitations.

In what way would this particular device not work as advertised?

Is quantum error correction really that demanding? I thought it was only a small multiple of the number of qubits, not orders of magnitude more.

That would be fun to watch, but to be overly pedantic about it, it will take a computer with hundreds of qubits to break current public key encryption.

My understanding is that the center core was nearly a complete redesign because of the greatly increased load from the side boosters.

When I was getting a dental implant to replace a badly decayed tooth (protip: get broken teeth fixed), my dentist used the same sort of thing.

According to http://www.nuscalepower.com/our-technology/technology-overvi... it would have a refueling cycle of 24 months. I didn't see anything about the expected lifetime of their reactors.

In a similar vein, the real task of debugging is not to make the program stop doing the wrong thing. It is to create in your mind an understanding of why the program as written necessarily behaves in the way it does.

Once you have that understanding, actually fixing the problem is straightforward.

> you are paying for a compromise

Very good point. Apparently including at least one compromise that most people (probably including the engineers who designed the CPUs) didn't know they were making.

Well, the vulnerabilities are directly connected to performance-enhancing architectural features, so...

"Someone trying to live well would seem eccentrically abstemious in most of the US. That phenomenon is only going to become more pronounced. You can probably take it as a rule of thumb from now on that if people don't think you're weird, you're living badly."

Paul Graham, The Acceleration of Addictiveness

It can't have a similar metabolic effect to sugar. For one, it's a peptide, not a carbohydrate. Also, in the quantities it's consumed in, there are very few calories.

Now, for phenylketonurics it's problematic, but they have severe dietary restrictions anyway.

The only problem I'm aware of with aspartame is that consumption of any sweetener is associated with weight gain, possibly due to changes in the brain's association between taste and calorie intake.

The pure purples are not in the rainbow because they are a mixture of red and blue, whereas the rainbow is made of single-frequency colors.

Isp just says how efficient you are at turning reaction mass into delta-v. Nuclear rockets can attain both high Isp and high thrust.

Exactly. UEFI is a bad idea implemented badly.

> There's already some starting work on UEFI for RISC-V

That makes me deeply sad.

ECC is vulnerable to Shor's algorithm, which gives exponential speedup. A rough calculation implies that 256-bit ECC would take on the order of 25k quantum operations to break.

SIDH keys are 330 bytes long when compression is used, so they too will fit nicely into network packets.

A digitally controlled analog computer is a good analogy.

One big limitation of quantum computers is that they can't erase information without losing their quantumness. So simple things like if-then statements become impossible (you'd have to execute both branches every time).

Yeah, if you have a 5000-qubit computer and two people want to run 2000-qubit jobs, I can see them being able to run simultaneously.

There will always need to be a classical computer running the quantum computer.

Symmetric encryption will need to double key lengths, such as using 256-bit AES keys instead of 128-bit.

All currently popular forms of asymmetric / public key encryption (including RSA and ECC) are vulnerable to quantum attack.

The implication for symmetric ciphers is that key lengths will need to be doubled. 128-bit ciphers like standard AES have 64-bit security against a quantum attack. I expect to see 256-bit keys adopted widely in the not-too-distant future.

I don't know off the top of my head what the implication for key exchange would be, but I know that anything that depends on the discrete logarithm problem for security is vulnerable to a quantum attack. I believe that includes all forms of Diffie-Hellman.

I expect quantum computers will always run in batch mode. Storing quantum state in classical memory is impossible, so task switching would be very problematic.