HN user

sliverstorm

24,708 karma

thebass at gmail.com

Posts5
Comments11,073
View on HN

Another gas bubbling through the water "knocks" the dissolved gasses out of the water. So the oxygen bubbles up out of the water, along with the argon.

I believe you can make a process noncacheable today, and maybe even disable branch prediction. This would totally shut down Spectre and Meltdown. You can disable SMT, and there's a whole host of other things you can do to isolate your "secure" process on an existing chip. Nobody has done these things because they like performance.

For most of what most people do on their computers most of the time, performance is fine without speculative execution or branch prediction

I think you underestimate the importance of branch prediction.

Where does the article suggest the water is wasted? It seems to focus on the savings in terms of reduced demand on the municipal water plant- rainwater doesn't need to be treated- and in terms of changed behavior:

once they got that rainwater harvesting system, the way they’re irrigating is completely different, and they’re paying a lot more attention to how they irrigate. It really changes behavior. Definitely people are more careful with how they use that rainwater than how they were using the potable water to irrigate beforehand.

It used to be illegal to do anything except direct the rainwater, e.g. direct a downspout into your flower garden. You are now allowed 2 55-gallon rain barrels.

The bummer is, even though you can now have rain barrels, it rains infrequently enough in Colorado that it's not terribly economical to buy 55-gallon rain barrels.

At $2.77 per 1,000 gallons from the utility, with infrequent rainfall it's pretty hard to ever recoup $176 for a 110 gallon system from BlueBarrelSystems. You're looking at 580 rains required to break even- while Denver, for example, sees only 40 days with "any measurable rainfall" a year.

The reason it's so fascinating though, is that because it is a many-variable optimization problem where 1) many of the variables conflict and 2) we haven't actually agreed on the desired optimum. In the end it still very much has a "you know it when you see it" quality, and nobody has come up with math that definitively says "yes this is" or "no this isn't".

Actually, it's maybe a little like spam filtering.

Reminds me of water rights. During droughts, huge campaigns against residential water use in California- meanwhile industrial agriculture consumes 80%+ of the water used in the state, and has no incentive to cut back.

The only one who can keep up the house is owner, but as you can see in this case they'll just choose to pocket the rent.

I don't think it's just a profit thing. If you're a small time landlord, it's probably incredibly expensive to retain a gardener/landscaper for such a tiny job. On the other hand, unless you live down the street it's awfully difficult to mow the grass every week, shovel the sidewalk after snow, water the plants, and so forth.

A small time landlord has no economies of scale for professional services, but doesn't make enough money to quit their day job either. (which would give them time to do all this themselves)

Naturally, a lone country road designed for speed is fine. It's when you've got a high speed road with lots of on-street parking and pedestrians right next to traffic, even house fronts, where you've got a major clash of functionalities and a safety problem.

I think the big picture goal of reducing speeds is much more than putting up a different sign. There's a whole movement out there pushing for denser development, reduced car-driven-development, and streets that are truly lower speed, not simply highways rebranded with different signs.

Segregating types & speeds of traffic is still good though, especially dedicated trails for pedestrian and/or bike traffic.

Reducing speeds is a form of collision prevention, is it not? A typical car can just about stop on a dime at 15mph, and a pedestrian has more time to react.

There's a whole slew of other pedestrian-friendly street design that we could & should adopt as well, but that doesn't make speed any less of a valid approach.

Has no one yet tried forking AMP and simply removing all the Google? Call it OpAMP. You might not get into the carousel right off the bat, but if you get the ball rolling you'd have actual leverage instead of writing open letters on the internet.

That's why it so perfectly illustrates the problem. The detractors are correct, a website can be made fast without AMP. But that isn't the problem AMP solves.

To draw a crude analogy- I don't have a problem with alcohol, I don't drink in excess and that's all there is to it. So clearly, there's no reason for AA or any other detox program to exist.

Post-AMP, it's easy to see why it never got solved before. Many, many detractors commenting along the lines of:

I was perfectly able to make my personal website fast; there is no problem, no one needs AMP.

To me, the fact that 'nothing happened' was a very much the point

Maybe nothing grand, but it's pretty hard to stomach movies that don't go anywhere at all. I come away wondering, what is the point? Why are you telling me this story?

There is no major turnaround and everything is all better moment. You learn to live

That's still 'something happened' and/or 'the movie went somewhere', and is acceptable.

The US is certainly too big for some things. But it's definitely not a good argument when we're talking about urban & suburban street design. How big the US is or isn't, means nothing when we're talking about how best to lay out a 5 mile by 5 mile plot of land for a town.

What's your BMI & BF%? IMO as another skinny person, you should probably clean up your diet and put on some healthy weight (muscle & bone) first.

The discussion about carbs, keto, etc applies to some people, but for the truly skinny, that feeling of weakness is your body slowly starving.

I still haven't really figured out how CR is supposed to be sustainable. I am around BMI of 19, and have been as low as 17 (6'2", 133lb). I become extremely unhealthy when I don't eat enough. As far as I know, I can't eat less and maintain the same weight. CR would, for me, send me to the hospital. Is CR just another name for "lose weight"? Is it working towards a goal rather than a lifelong steady state of living?

the industry has been fully aware of the problems with monoculture for a very long time now, and they don't really have much options to fix it

That's hard to believe. Look at tomatoes. We don't need genetic engineering to fix tomatoes, we need a change in marketing & consumer demand. Tomatoes have been hyper-optimized for a small set of parameters, leading to little variety and bland flavor. Yet, if you look in the right places, you can find perfectly edible reasonably priced alternatives, proving the flavorless beefsteak is not the only marketable tomato.

Everybody & anybody. Governments, businesses, private individuals.

At the same time, though, the ratio of debt-to-gross domestic product fell for the fourth consecutive quarter as economic growth accelerated.

So, not all doom and gloom.

Those were generally about culture and morals though, right? Rock and roll, drugs, etc scared parents because it was viewed as depraved & debaucherous, nobody was worried it was a substitute for good parenting and that it would impair your development of social skills.

Concerns about "screens" today seems more analogous to the old "TV-as-parent" issue.