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Cake day: October 6th, 2023

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  • That is actually true. Air behaves much differently at low temps than it does at high temps. At cold temps the air will be much denser. Airplanes for example can take off with significantly shorter runways on cold days, often seeing more than a 50% faster climb rate and acceleration.

    That said, I’d bet more than anything, that the bigger difference is how your ear drums behave at lower temps. If those membranes are a little stiffer, that’s going to make a big difference in what things sound like.

    That said, while I have flown planes, I’m not a doctor, so I don’t actually have expertise in that area.










  • I mean, there’s no problem here. In fact, I think it’s super sensible to make this a 2 seater.

    Clearly their plan is ultimately for this robotaxi service to be something you can run on any Tesla car. Meaning that the majority of cars on the service will be 5 seaters.

    On the other hand, I’d bet anything that the vast majority of rides requested are for a single rider. So if you’re going to make a vehicle specifically to be the optimal car for this purpose, it should definitely be a 2 seater. Smaller, lighter, better mileage, cheaper. If you need to order a ride for more people, a different car can do that and there are more of those available anyway.

    The only gripe i have, is that this really could have been a 3 seater. Generally cars have adjustable front seats because the driver needs to be able to reach the pedals comfortably. But since that isn’t an issue here, it would have made a lot of sense to make it a bench seat just like most cars have in the back. Then again, the car does look quite small, so perhaps making it a 2 seater helped them constrain the size a little bit more.

    Edit: Oh yeah, don’t refute the post, just down vote it, that’s a sane and well adjusted thing to do. I mean, I’m not even saying anything controversial…



  • I recently read somewhere that the total new pollution caused by data centers (more specifically, by the generation of the electricity they require) is now already significantly higher than the total pollution that has been avoided by all EVs.

    Well I’d love to see that source. I do care about actually understanding the relative carbon footprints of these industries. You can’t make informed decisions without being informed, so that matters to me.

    But that said, the EV industry desperately needed a kickstart, and it wasn’t happening prior to Tesla. You can actually attribute that move to electric to Tesla, as other car companies felt they needed to compete with them or be left behind.

    On the other hand, you can’t attribute all AI data centers to Elon musk, he’s not responsible for AI in general. It only really makes sense to blame them for the percentage of carbon emissions generated by xAI. I’m having trouble finding any source to pinpoint what percentage that might be, but it’s very likely that xAI makes up for less than 10% of the global AI data center power consumption, probably much less.




  • I would argue everybody has benefited from the electric car revolution.

    Air quality is better with more EVs. Before Tesla, EVs we’re actively being suppressed by big oil companies, auto companies were being discouraged and disincentivised to make them.

    But that’s a different company from SpaceX, if the question is how has SpaceX made life better? It’s probably a lot harder to find positives there. But there are some things that were definitely good. If not for the crew dragon we wouldn’t have had a way to continue supplying the ISS, we almost certainly would have had to deorbit it years ago if the falcon 9 never flew (And in fact there were official plans to do exactly that).

    Certainly some people have broadband through starlink in places where it was never an option before. I remember when I first went from dialup to cable Internet, it made my life better.

    I’m not saying musk is a good guy, just that his companies have had a lot of effects, some of them positive.