Could anyone explain what a "chroot zap" is (from the 'effective caching' feature)? Googling it just brings me to the same page.

It means: remove the chroot folder (safely, with umounting everything first). You can do it with "pmbootstrap zap", it will ask interactively, which chroots you want to delete.

Ahh I see, thanks!

I believe you can't ever get cleared. The only way to confirm mad cow is to dissect the brain, so obviously it can't be tested for in a living person. As a result, anyone with over a certain amount of risk for mad cow can never be allowed to donate.

If I had leukemia, I'd love some possibly-mad-cow-tainted blood/marrow from an otherwise healthy donor.

:-) I am the UK kidney transplant list last year I turned down a potential kidney as there was a risk that the donor was potentialy HIV+

The surgeons second line was "don't worry we have really good drugs for HIV these days"

In the end we agreed that given my age and I then had fairly good function left that letting some on else have it was for the best

You can still donate (blood, at least) for research purposes, if you can find someone who's collecting it. Bonus, you get $50–100 instead of a cookie!

I think the implication is that you age slower if you consume fewer calories. So if you adopt CR then you might feel at age 50 how someone on a normal diet feels at age 40, and at 100 you might feel as they do at 80.

Having done it for short periods of time (months) it makes you feel like you're 50 at 20 - drained and weak.

Interesting; I feel fitter and need less sleep. What exactly did you do? Maybe it differs from person to person like many things, but i'm curious.

When I want to lose fat I go low calorie high protein (below 2000kcal). I get constant food cravings and I can't even get myself to do anything in the gym, also have a hard time focusing at work. It was considerably better when I wasn't lifting - then you get used to it (I still felt weak) - but weight training + low calorie = very draining.

But 2000kcal is already well below a male doing normal things during the day; so 2000 + gym with weights would drop that completely out. When I do weights I try to shoot for around 2500 which already sucks compared to what I was used to (which does affect performance but it feels the same so I think overall I benefit?). But when just doing cardio I can go well below 2000 on a day or just not eat at all (only tea + water) and feel sharp, I just choose not to and just do days without any food.

I cannot imagine doing every day below 2000 and then going to the gym indeed. That would definitely not be productive and painful, but doing days of weights with 2500 max, other days around 2000 and then some days 0 works fine for me.

Yea going really low calories and working out is really nasty - you visibly start shaking during practice and start feeling really strange - I'm guessing from lack of blood sugar. Will not be doing that in the future.

I'm trying something along those lines this month - I eat maintenance calories and work out over the week (~3000) and then I eat ~1000 on the weekend (mostly from coffe/milk/protein shake), but I want to do side projects on the weekend - sometimes I can get in the zone and food doesn't even get on my mind, other times I just feel like doing nothing when I haven't eaten.

That might be modafinil, but again it comes with side effects and probably doesn't address the core issue

Maybe I'm still not being clear. I don't think people mean "the effects of having slept" in a symptomatic sense, either (alertness, etc.)

Rather, what people want is "the effects of having slept" in a physiological sense: a pill that rapidly sweeps the same toxins out of your body that sleep does gradually. Taking such a pill would have all the same long-term benefits that a healthy sleep schedule would have.

Of course, a "pill" that did this properly would likely have to contain something like complex organic-waste-molecule-chellating molecules, or perhaps even biofilm-scrubbing nanomachines. :)

A negentropy pill; the holy grail, the philosopher's stone

DARPA used to work on something like that for the US Army.

IDK about any results yet.

you still get psychosis after not sleeping for a few days, just like with amphetamine IIRC.

the brain needs sleep, we aren't sure why, but stimulant psychosis does a pretty good job of proving that you start to break down after depriving yourself of sleep. paranoia, hallucinations, etc are all very common with this kind of stimulant abuse where you're keeping your body awake for days at a time.

generally speaking, if you use stimulants (or "wakefulness promoting agents" like modafinil) regularly you should be dosing first thing in the morning after feeding yourself, not re-dosing, eating what you can when you can and sleeping each night as much as possible.

MRIs don't cause radiation damage, unlike something like a CT scan or xray.

You're right. I got my tests confused.

I took a course that was all about the historical progression of science as a discipline since the early 1800's, and it really opened my mind to how much I didn't know about science. I really think that a course like that should be taught to students BEFORE they start taking high school science courses. This would provide a historical context for the content of science courses and, I believe, make it a lot easier to digest the material in a science class (for the reasons the author suggests).

Or the email server that couldn't send emails more than 500 miles:

https://www.ibiblio.org/harris/500milemail.html

First time hearing this story, and also just discovered `units` which I really love :)

Funny, I didn't understand what you were referring to and quickly forgot about your comment. I then read the 500-mile story, got to the end and thought "units? oh cool, new command... wait, wasn't there a comment about `units`?"

Any toothpaste with menthol (pretty much all of them) contain a local sedative, it's just not addictive

Isn't it illegal to remove the VIN?

Here apparently it isn't if you mask it. That's not the same as removing it, but your local police might have a different opinion.

Whether or not it is effective is another matter (and that's hoping there is only one instance of the VIN on your car, there may be other, less obvious ones for instance bar-codes).

That's why they said "mask off" instead of "file off". On some (many? all?) cars the VIN is stamped on a plate that's visible through the windshield.

Cows produce a huge amount of methane, from their digestive system. That alone is enough to cause significant environmental impact, and if we stopped eating beef we would see a decrease in the amount of methane released.

Don't forget the large amount of water it takes to raise cattle.