HN user
It is very easy to do the math on the aerodynamics, even at running speeds it isn't insignificant. It drives me crazy that many pro marathoners are in flappy clothes, or big hair cuts!
In a mile it could be between 1 and 7 tenths, depending on wind and and how bad the default outfit was.
And that may seem insignificant but its big margins at the elite level.
Because most humans don't really try, not limited to east africans.
The mile record has dropped due to equipment (tracks and shoes) and pacing innovation since the very first. And I repeat this all the time but nobody listens: modern shoes are fast because of the special foam and light weight, the carbon plates have very little to do with it, experiments have cut those plates in half and running economy remains unchanged. they likely provide important structural support for the thick foam, and carbon makes sense to use for that for weight reasons, on a budget plastic is fine.
I started programming at ~8 and as a kid you often are sure the compiler is wrong, and it never is. (maybe once, have a vague memory of it)
Then years later I started playing with Nim when it was still in beta, I think I found 3 compiler bugs in a few weeks! Reported them all, all got fixed!
And then a few years later found a bug in LLVM, doing weird stuff with Rust and SIMD intrinsics. Was difficult to even communicate what was going wrong but did get it reported and confirmed eventually!
Why do people reply with this "it was always american" response? Do you feel like it is necessary to protect RocketLab or something?
It was founded by a guy in new zealand with the first launch complex and first launches coming out of new zealand.
to characterize that as "always american" is so silly it makes you seem like a non serious person.
of course they would have had american resources and connections from the start.
Aside from the website being annoying, the story is horrific, a doctor speed running patient interactions with pre canned snippets. Disgusting.
A reminder that in a recent Paul Graham blog post, he vowed to help the 2nd Trump Admin crush woke youth, and asserted that racism isn't bad as the left thinks.
In the following weeks we saw Elon do two Nazi salutes in front of the presidential seal, and we saw the Trump admin hire tons of thugs to rip minority children out of their beds, and those same thugs have murdered a number of citizens, with Stephen Miller loudly shouting that they have absolute immunity.
I'm surprised Paul Graham and the signers of the blog post are not to embarrassed to continue posting their thoughts. At worst Paul should stop talking, better, he should apologize and admit he is a fool.
There isn't going to be a lot of improvement in overall EV performance/capability from better motors. Existing, boring motors are already close to 100% efficient, already small, and already powerful.
Advancements here chip away at margins, its nice but nothing to get super excited about. Whereas a modest ~20% increase in energy density from batteries would be amazing. Every little bit we improve there unlocks new capabilities. Towing long distances, smaller affordable economy cars and sports cars, airplanes, etc.
supply and demand as always
In countries where students perform better, they do the opposite of your plan. Resources are pumped into the failing schools to get them to do better. You seem to be just arguing for even more privatization in American which is awful, the kids that are failing have parents that won't be paying for good education or setting up schools. They won't bother with it at all if it isn't public and required.
Nate was a huge outlier in that prediction, he gave trump a better chance than almost anyone else that I can recall, so why are you mad at him about that?
What made me mad is Nate seemed to turn into a MAGA troll himself after that election.
It did until oligarchs bought it.
Why does anyone want to work for companies run by such awful people in the first place? I saw me CEO make up a whole new persona to suck up the new nazi administration I would be gone the next day.
I recently started a game project in Rust aided by Claude Code because I asked myself that same question. I like Rust, but it is definitely harder than C# for me. But with the AI aid, doesn't seem to matter which language I use. So I take the performance and safety wins.
With some care about what features to use and when, F# can be very fast. Which is nice, use functional paradigm when you want, or low level imperative code in hot loops if you need. But yeah if you use linked lists and sequences and immutable data types everywhere it sure isn't Rust.
I think you are right that we should focus on the fact that the president raped children, invaded Iran with no plan and for no reason when he promised not to start a war, and violates the constitution and law daily without consequence.
We are all failing morally for not revolting at this level of corruption.
He raped kids and the entire GOP is helping to cover that up.
He raped kids and the entire GOP is helping to cover that up.
The disingenuous people who discredit climate change will do so no matter how serious people act. There is no point in changing behavior on their account.
Yes, our tech leaders would rather send america into fascism that have any impediments put in the way of their business plans. It is disgusting, and sad.
It's physically not possible at our current level of technology to make this "safer"
Absolutely it is, if NASA was not constrained by congress to use shuttle components to build the spacecraft, they could have had double the payload mass capability at least (the Saturn V was almost twice as capable, we should be able to do a little better now). This would provide tons of extra margin for safety, and allow a shorter and thus safer route to the moon as well.
We are not in a democratic setting in America any more, the people in power are willing to start wars to protect pedophiles, they are willing to hire Nazi thugs to shoot your wives in the face. They are willing to bribe supreme court justices and dismantle democracy, and they will if not stopped by force.
Thiel has been obviously and evil sack of shit for decades but more than half of HN viewers revere him. I fear we have no hope, and the good people asking how we can democratically solve this problem makes me feel even more hopeless. Yall don't get it.
oh, paul grahams eassays!
Speaking of, how are his efforts to help this administration cut down no woke youth?
Does he still think racism isn't as bad a "the left" thinks, after Elon's Nazi salute and the thousands of ICE agents brutalized immigrants, murdered citizens, while cheered on by half the country, then invaded Iran because the Christian right thinks its a holy war against Muslims?
You are naive, and assisting a fascist regime.
The racing frames here don't break as a rule as OP suggests, if one does there was a manufacturing flaw or a crash/impact of some kind.
A few grams of weight does not have enough impact TT bike performance enough to make it worth shaving 100 grams if it risks reliability.
What a terrible human being, why would anyone want to be involved with Y Combinator or any of their companies that would put up with this sort of behavior?
There used to be a video on youtube of a carbon mountain bike fork, and they were SMASHING it with a ball peen hammer, repeatedly. It did do a little damage but remained rideable, and was in much better shape than the metal forks they smashed.
This has no practical impact on actual bicycles though, in practice they all fail, at similar rates.
"There is no speed benefit for a non professional on a carbon frame"
Yes there is, I and many people have directly measured it.
Carbon fiber bikes have two main properties that can affect performance:
1. they are a little lighter. This doesn't matter nearly as much as most cyclists think, but it does matter a bit. If you race competitively in the mountains, you might care.
2. There is more design freedom for shaping them aerodynamically. This makes a bit more difference than weight, and if you are competing you definitely want it.
That is a myth. Material alone doesn't determine this, and modern road bikes are on 28mm tires at ~70psi so this isn't nearly as much of an issue as it was 20 years ago (and it wasn't a real issue then either)
This is a misconception. Carbon fiber mountain bikes are not more delicate. Designed properly they are more durable. The idea that carbon fiber is innately delicate comes from road bikes designed to be as light and stiff as possible, and they can end up brittle, and weak in areas that don't normally see stresses. Not all road bikes are designed like this, even high end ones, but some early ultra light bikes were.
Bikes that need to be durable use different types of fibers that can bend more before cracking, and may include layers of kevlar or other composites with more 'toughness' in key areas. My wife has a carbon fiber mountain bike and has been racing every weekend, winning, jumping, crashing, riding every day, for 3 years now, bike is fine.