Seems clickbaity: the selected dates are pretty weird. If you just maintain 1x long, you end up down ~5% overall. Obviously, there's hefty volatility in the days they selected, but I'm surprised that the vol averages out down given that the last decade was quite positive on average.
I’m not sure anyone involved in this space seriously believed in the physical attack resistance TDX/SNP. At least not yet. The attack surface is just so vast.
This reads like yet another overhyped named vulnerability.
These tools are a fence. The fence started out pretty short with AMD’s original SEV and has been getting taller since.
Taking the software operators out of the trust boundary is still (comparatively) viable despite this type of attack. And, if the cloud provider sends you attestations proving your workload is in their Real Deal data center with actual guards, cameras, and compliance operations, I’d expect this specific attack to be irrelevant.
——————
Only had a quick skim at the paper. Looks like they are mucking with the DDR sticks to make aliasing possible, which lets them circumvent integrity protection.
I thought circumventing integrity was already possible-ish with rowhammer and SNP? SNP doesn’t store integrity bits anywhere so it can’t even pretend to catch changes in dram.
For CPU bound work loads, pretty low, but not low enough that it's free (~5%).
For devices (especially latency sensitive workloads), it's quite bad. Device accesses have to be bounce-buffered. You can't do anything vaguely zero copy, since the device can't DMA to or from the VM. Future hardware support will mitigate that (mutually attested VM/Device interactions), but no real world devices support it yet.
The polymer chains are quite long after manufacturing for teflon pans. They are largely “safe”. Don’t use metal utensils with them and don’t overheat them. That said, I personally minimize my use of teflon pans (mostly just use them for eggs since I hate cleaning eggs off)
Even if PFAS were as bad as lead (which it is not), teflon pans are probably more analogous to leaded glassware than, say, lead in gasoline or paint. Waterproof outerwear is probably analogous to leaded paint (more likely to leach and plausibly prone to contact mouths accidentally).
Eggs don't stick in cast iron if you use a little oil. Ignore all the complex advice on seasoning. Just start using a cast iron pan. At first it'll suck and stuff will stick. Over time it'll keep getting better. If you want to help it along you should heat it to the smoke point after you've scraped your egg out and let it cool naturally before cleaning.
Maybe PFAS aren't as "bad" as lead in that the effects of lead are more noticeable in the short-term, but the widespread clinical health effects of PFAS across the entire human population is "bad." Bad is not really a useful enough word to measure the damage PFAS have done to human health. There's far more PFAS floating around inside people's houses, vehicles, clothes, foods than lead; so, I'd consider it worse than lead in terms of reach.
You could also sharpen just one edge of each ski (opposite edges across the pair), then put the skis on random feet. Then see if they can tell which edges are sharp! Most of a typical skier’s weight is supported by the inside edge of the downhill ski while carving.
Youth racers tend to ski with one set of edges on the inside for training, and the other edges inside for racing (under the theory that the inside edges take more of a beating. Who knows if that is accurate). If you ever see youth racers on slalom skis (which are chiral, since they have tips that deflect ski gates), you’ll often notice that the skis are on the “wrong” foot.
True enough at younger levels but as you move up in age and skill, the weight distribution between the downhill and uphill ski gets closer to 50/50. What you're saying has a kernel of truth and young skiers are still taught downhill ski as a fundamental but shaped skis have really changed the game on this.
No, you never weight each ski evenly. Former WC mogul skier here and even in moguls there's a slight difference in weight on each ski in a turn. Shaped hour glass skis make it easy to turn but you still need more weight on the outside downhill ski.
Also, that's awesome that you competed WC moguls. I probably saw you compete depending on when you were active, and we almost definitely know some of the same people.
Oh boy, yeah pretty old :) There is one person I know (but not very well) who you likely encountered (Canadian, in fact) but they didn't make it to the WC until 94 I believe.
In a race, my kids race edge is marked on each ski and he only has those two edges close to his big toes on his race runs. If you don't ski, your a genius if you can figure out how and why this would work I'd imagine.
I used to paint an arrow pointing to the left on one ski and the right on the other. Then I would for instance ski <--> during the day, and -><- during the race.
Unless you do your own tuning (or are willing to light money on fire) it’s hard to A/B test ski waxing/edge tuning. I kinda suspect this alleged olympic tuner didn’t cross compare, or just doesn’t ski in ways where you’d notice (he might just like skid turns through packed powder). Or he just uses backcountry noodles on groomed snow, and can’t tell since he’s using skis that won’t let him.
Going from dull edges (even “well maintained” ones) to freshly sharpened is quite noticeable on icy days. I use 0°/4° and like the responsiveness and grip.
From my long past race days (when I had to maintain several pairs simultaneously), I could tell that the wax design temp mattered deeply, though mostly >25f vs lower temp. High temp waxes are down right sticky in cold snow (and vice versa). But cold waxes are largely fine for middle temps (~10-20f or whatever). The (horrifying) fluoro stuff was also very effective, though probably banned by now if anyone is sane. I wasn’t able to tell the difference beyond the temp though, unless the skis were damaged. Though, I mostly just don’t wax these days since I’m not trying to eek out extra speed.
Base bevel (the angle trimmed off the metal edge from the side that sits on the snow) matters and is largely ignored by skiers/snowboarders, since tuners are cautious, and skiers don’t know to ask. It determines how responsive the skis are (going from 0° to 1° means you need to tilt your leg an extra degree). You can only decrease it (or clean it up) by flattening the entire base and then sharpening, which requires specialized equipment.
Edge bevel matters, but allegedly has diminishing returns. It (allegedly) gives a bit of extra grippyness. I’ve never quite understood why it matters, since it seems like it just narrows the metal very slightly. From my A/B testing, the freshness of the sharpening seems to matter more than the edge angle, but I’ve also never set it below 2°.
Switching to more aggressive edge angles (1° base, 3° side from 0° base, 1° side) on my snowboard made a huge difference. I can lock in a carved turn much easier on ice and don't catch my tails or any other sketchiness in slow floating transitions across the board. I think most of the improvement is attributable to base bevel, and I agree with your assessment that freshness of sharpening is important. I hit my edges with a fine grit stone and a gummy stone every morning before heading out, and by afternoon they're noticeably more dull and hold less well. One test you can do to measure this is to drag the top of your fingernail across the edge in a perpendicular manner. If the edge is sharp it'll shave a little ribbon of fingernail off, if it isn't it won't. I only ever use a file to change angles or if I need to take a bunch of material off to fix a large rock gouge (like something that would require also ptex repair). I ride a Tanker 201 with Upz hardboots and F2 plates.
Thanks for the correction. I had just never heard of 5° degrees as a base bevel. Not sure why you seem defensive. Isn’t 0.5° (or lower) the factory tune for slalom skis? Might only be a thing for U16+.
All good, I didn't type it correctly initially. A lot of coaches in the past have been critical of those angles he's been on so I was probably anticipating it lol. Most kids that age are likely 0.75 and two degrees for Sl. And yeah older Fis kids are maybe trying zero base and perhaps 4 degrees on water injected surfaces.
Yeah that is dialed like an F1 car and four degrees will shorten the life of the edge a bit. Some will do that much just under boot but go 3 at tip and tail. Another approach is to never debur and file every run. Saw that hack at a Fis GS race this year that was water injected by an over zealous course crew.
US involvement in South America is arguably the leading cause of the current instabilities in the region. It is not the sole factor but in order to understand the geopolitics of the region must be taken into account. Knowledge of these US involvements are often not well known in my experience.
Consider for example the role of American legislation and consumption in the drug trade and the resulting immigration and criminal crises throughout the continents.
Bolivia has been independent since 1825 and has since then experienced over 190 coups. Nobody can whitewash US involvement in South and Central America in the 20th century, but the US is not the sole cause of Bolivian instability. Perhaps it makes more sense to blame colonialism, which set up the unstable rural/urban indigenous/white duality that has made the place so fragile.
And remember that each coup "masterminded" by the USA has found more than willing accomplices in each country, every time. (And one could argue that in many cases, if the US didn't do it, the USSR would have - but I recognize with honesty that does not apply to 100% of the cases, Chile especially).
Maybe it is time for those countries to take a good hard look at themselves.
> each coup "masterminded" by the USA has found more than willing accomplices in each country
Really? You mean every time we've tried to overthrow a foreign government we've been able to find locals who were willing to give us a hand if they could personally benefit from the arrangement? That's amazing! What are the odds?
If in a country, one can easily find enough people in positions of authority ready to backstab the whole country, then "foreign interference" is only half the problem...
I have no idea. I made a specific argument and was explicit about not immunizing the US for its absolutely wretched involvement with South and Central American politics.
"Please respond to the strongest plausible interpretation of what someone says, not a weaker one that's easier to criticize. Assume good faith."
"Eschew flamebait. Avoid unrelated controversies and generic tangents."
There's a very common motte and bailey on this topic, motte = US supported coups materially, bailey = at some point the last decade, US diplomat went on the record with anodyne statement of support for winner of internal struggle.
It's insidious because it equates supporting a winner with interfering.
Morales is a poor example given the, uh, extrajudicial circumstances.
I'm repeating myself here, but this 2019 thing is a "coup" in which:
* The ousted President had just claimed a victory in an unprecedented and unconstitutional 4th term election, after a judicial decision overruled both the constitution and the results of a failed referendum to amend the constitution to allow Morales to remain in power.
* The claimed victory in that election was widely deemed fraudulent, including by OAS (if you care what OAS thinks).
* Morales fled the country along with much of the constitutional line of succession, leaving the 2nd Vice President of the Senate to assume the presidency in the standard line of succession.
* That new president, unapologetic right-winger Jeanine Anez, promised prompt new elections and then delivered them less than a year later --- despite COVID.
* Those elections restored MAS, the Morales party, to power, and the transfer of power occurred peacefully.
* The new MAS government immediately had Jeanine Anez arrested for the "coup" in 2019, and has imprisoned her ever since, in an action that has been pretty much universally condemned by the industrialized world.
Arce has abused his power, Anez has abused her power, Morales certainly abused his power, none of this is appears new, there are people on HN that are far more authoritative about Bolivian politics than I am, the US with respect to South America sucks ass, but I doubt very much that there is any simple story to tell about what's happening here.
> unapologetic right-winger Jeanine Anez, promised prompt new elections and then delivered them less than a year later
She had no choice as the alternative by that point was a total overthrow of most major institutions of government, in which chaos she and her allies would have fared even worse than they did.
> The new MAS government immediately had Jeanine Anez arrested for the "coup" in 2019, and has imprisoned her ever since
As they should have. She was responsible for many deaths.
"Unprecedented" is easy to explain: since the military junta was overthrown in 1982 and democracy established, no president prior to Morales had ever served two consecutive terms, following a policy set by the country's constitution.
Not only was Morales final term unprecedented and unconstitutional, but it followed an attempt by Morales to amend the constitution via referendum, which failed.
Bolivia has notoriously pliant judiciary; that judiciary was used not just by MAS but also by Anez and by Morales predecessors to suppress dissent. Human Rights Watch is one place to go for analysis of the problems of the Bolivian judiciary, which does not function like that of the US or European states.
I understand you you might not care what OAS thinks, but Morales did: he ordered the OAS audit and conceded its results.
Anez assumed power after 3 layers of the Morales constitutional line of succession, all MAS party members, resigned in protest, thus assuring that the MAS opposition would assume power. It was a spectacular own-goal for MAS, and despite it, Anez' Democratic Socialist party immediately handed power back to MAS after the election that they timely called.
I would be interested in sources from western countries that have defended the imprisonment of Anez. There must be some. Thanks in advance!
I have no expertise in Bolivian politics. I read things, just like everyone else does. My opinions about US involvement in South America was set by the Jesuits in high school, who made us watch Romero and read Eduardo Galeano.
But when I read things here referring to the 2019 coup, I'm going to point out that unlike most of the US-backed coups of the Cold War, there is another side to this story. You might read the European Parliament resolution condemning Anez' imprisonment for another formulation of the same point. That Anez handed power off, almost immediately, to MAS, which then imprisoned her, is pretty dispositive for me. But we don't have to agree.
From a geopolitical perspective the single greatest reason for outside meddling in Bolivia today is control (indirect works fine) of the largest lithium reserves on the planet, currently being tussled over by both China and the USofA with some rumours of Saudi investment interests.
These things typically play out with layered shell companies, private mercanary contractors, and local bribes - Eric Prince (USofA) was recently taking Saudi pay to "secure" through bribes, corrupt judges, political allies, and occassional force traditional lands in Zambia for food security, his group is now providing security for Chinese transport of copper from there to Angola.
Such is the world we live.
It is a certainty that interested parties (corporations, governments) are seeking to control Bolivian lithium and equally certain that their tracks well be fairly well covered (but not for ever).
On 8 November 2020, Luis Arce was sworn in as President of Bolivia alongside his Vice President David Choquehuanca.[103] In February 2021, the Arce government returned an amount of around $351 million to the IMF. This comprised a loan of $327 million taken out by the interim government in April 2020 and interest of around $24 million. The government said it returned the loan to protect Bolivia's economic sovereignty and because the conditions attached to the loan were unacceptable.[95]
This coup attempt is, without any doubt, a project of the US State Department and intelligence community. You don't need a smoking gun here, or put another way the smoking gun is our posture toward Latin America for the last 100+ years.
The notion that we are not involved somehow is totally ludicrous. That doesn't have to mean that Tony Blinken (or Joe Biden) personally signed off on this, but we are involved. To suppose otherwise is to be naive to the point of stupidity.
No, it's not, because this isn't a court of law. You're allowed to read between the lines here and use common sense. You don't need proof beyond a reasonable doubt.
Given the history of the US on matters such as this, it would be unusual if we weren't involved. That's really all that needs to be said.
you’re asking people to prove a negative for reasons that are irrelevant and inconsequential, aside from your hardon for pointing out that the US coup’d some folks
Hey, a whole class of "political commentators" like Hasanabi have made whole careers off reframing every possible conversation around the braindead regurgitation of "America bad".
And internet echo chambers are so bad that it substitutes for thoughtful commentary.
America opens itself to that criticism by calling itself a good, moral leader. As if its constituents and allies need to believe that.
So some people are gullible and eventually feel lied to. But I think the US could operate more at face value and then the same things occur without the cognitive dissonance. It would probably be far easier to support too.
