340 karma · joined May 4, 2019
Essentially, at highway speeds, telsas are slower than the average pickup truck. Not as impressive as the 0-60 times
The motors start to get inefficient even around 80mph. Telsa's have amazing 0-60 performance but get beaten by many cars on a highway roll because of no gearing.
This doesn't include trucks which are a large part of the market. Being designed to haul, everything is oversized.
P100D is 100kw/h battery, which should be able to put out at least 1500 hp continuously.
The problem is 100% Tesla's cooling system not being powerful enough.
They mention increases in efficiency like it matters when electic motors are already ~95% efficient.
They mention cogging as a problem, when everyone solved that a decade ago by using FOC drivers.
It does field weakening by physically rotating part of itself? That doesn't sound like a good idea. At all.
A single reduction gear is complex and heavy? Uh no, its probably the cheapest part of the motor
You can't have an emergency exit that locks, it must always be openable from the inside. You get huge fines for an emergency exit that is blocked in any way, and the fire inspectors will shut down your business until it is fixed.
The system isn't perfect but it works most of the time, fire deaths in the US are quite rare.
I echo your amazement with the sheer size of the open border area. It's possibly the largest in the world.
US states are very culturally homogenous. Likely the highest similarity in the world among large countries. Possibly a result of such a mixed heritage and extremely pervasive cultural influences. Who really knows though.
I've been to many states and the difference between even coasts is the same as maybe 300 miles of travel in Europe or Asia.
Accessibility Cross browser polyfills Easy translation support Automatic mobile view Developer mindshare
The lack of polyfills is VERY concerning. Your site probably doesn't work on 10% of browsers. And getting from 90-99% is an excercise in futility.
If you used a popular UI framework and transpilation you could easily write a super modern site that works on practically everything back to IE6. And with Vue or React the whole thing could be a few hundred KB, probably smaller than some of your images.
If I was brought in to work on your site, I would immediately rewrite it if it's more than a few pages. Plain HTML with PHP becomes an unmaintainable rats nest if you try to do anything complicated.
For example, the only charts on the page show how smaller agencies give higher grades on average. What does this have to do with risky asset vehicles exploding in popularity? Not much.
There are many obvious explanations to this that the article doesn't even mention. Like how a slightly lower rating from a bigger agency may still carry more weight, skewing ratings higher the smaller the agency.
The article mentions several times that additional ratings agency competition has made things worse. And that doesn't make any sense, investors now have the ability to choose who they believe.
The bond inflation part of the article is believable, but the focus on comparing agencies to eachother is suspect to say the least
You're heavier than the cars around you which helps a lot, but the extra weight also smashes through a lot of obstacles.
There's a tradeoff between skip/fast forward fidelity, streaming delay, and iframes. If you're not live streaming and don't care how easy it is to skip around the video increase the iframes inverval as much as you want and watch the bitrate melt away
Would you rather have a friend or an enemy spying on you? That appears to be the only options now that technology has thoroughly penetrated every day life.
Another point not mentioned enough is that societies with free press are far more likely to find and report exploits/backdoors. In a country like the US you see this a lot. There's many cases of security researchers reporting possible government funded exploits against their own government. In a place like China reporting something like that would probably mean you disappear
With no evidence I blame downvotes, which seems to be a common thread with other users on this thread.
I don't think it's about high karma. I've got a few comments that gave me like 1/3 of my karma. It doesn't appear to bias towards established users. More likely, a few downvotes (luck) is what sinks you
I also agree with #2, a single unpopular comment can ruin your karma, and seems to rapidly contribute to a rate limiter that impedes your ability to interact with the site. I tend to comment on spurts when I've got a bunch of free time. It's common to have a comment downvoted below 0 and end up with "you're doing that too fast" rate limiting. I'm not 100% that downvoted comments are the cause, but it seems likely.
I disagree with #3. The few mods HN has already work hard. I don't think we should give them more to read. I would rather remove downvotes, I don't see a point besides encouraging echo chamber mentality
The least controversial comments usually bubble to the top, even when they're not the most informative or constructive, due to downvotes.
Controversial but otherwise fine comments should not be punished by downvotes if they don't violate site policy (flagging). IMO a site that promotes good discussion shouldn't allow users to tank comments they don't agree with
Super popular REST libraries like Flask, Django, and Rails don't even support it!!
That's why choosing the right language and framework is super important from the beginning. It's easy to choose something slow as mollases and get left in the dust with constant performance problems
Some projects now just build in their own docker container. I hope this becomes more common, it's always a single click build no matter how many crazy dependencies you need installed.
Static CDN hosted react/angular SPA with a speedy backend can serve a stupid amount of traffic even on AWS free tier.
Ehhh the easiest way to get fast sites is combining a fast language and framework. There's like 3 orders of magnitude difference in performance between something like Django and Vert.x
I've seen code slow enough (PHP, 10 req/second) that running enough capacity consumed like 15% of the engineering budget. That could have easily been .1%.
Since developers dont care about hosting cost most of the time, they keep using horrifically inefficient frameworks. I rarely see super slow code because people get called out in code reviews for doing really stupid stuff. It's always the slowness of frameworks that's been a problem IMO.
I heard the jeans especially are just as comfortable as denim (since people are used to rather rough denim pants anyways I guess)
You should be able to hack something together that feeds zero copy buffers into Netty compression handler. Maybe using Netty or Vert.X file API, or maybe just raw NIO2.
I'm not sure how fast this would be, but my gut says "very". Netty can easily saturate 40 Gigabit Ethernet lines, and file IO should have less overhead. That's ~5 gigabytes a second.
It's going to be a good bit of coding for sure. Vert.X/Netty/NIO2 are all async and pretty low level. They're generally 1 thread per core, and along with SSD read patterns you're probably best off reading files in parallel, one per core. Might not be worth the effort.
You may want to look into ZStandard as well. It's Superior to Gzip in most ways when you need something fast but decent.
Iranians and US citizens should protest against their governments causing this political situation. From my limited research, neither party is innocent. Bothering GitHub doesn't have a purpose, they are only blocking Iranians to comply with laws.
It sucks, but that's the whole point of sanctions.