Zak Steigmeyer

@ramez I don't think there's a time where we settle for self driving cars being as dangerous as average human drivers. It makes sense to me that they would need better sensors than we use to be much safer drivers.

One more thought on vision-only for self-driving: Elon and Tesla bet on cameras-only in part based on the logic that "humans can drive using vision only". That's sort of true (hearing matters). What it misses is that machine learning systems require *orders of magnitude* more training data than humans to achieve similar performance. Tesla has effectively tied multiple hands behind their back by neglecting to use other sensors that would give their vehicles super-human perception.

The Waymo / Tesla autonomy contest mostly comes down to LiDAR. Tesla's approach of cameras only is cheaper, but might not work any time soon. Is autonomy possible with just cameras? Eventually, yes. But it's harder, especially at night, in glare, and in rain and fog. We don't know how long it will take. Elon doesn't know how long it will take, as evidenced by repeated claims that haven't materialized. Waymo, on the other hand, has working autonomy, but at a high cost. How fast will the cost of their sensor stack drop? That's far more predictable than the rate at which Tesla's autonomy will improve. My bet is on Waymo achieving low cost and scale long before Tesla achieves safety or approval for unsupervised autonomous driving. * - I write all of this as the owner of a Tesla with FSD.

@drvolts At least partly because it's not practical to cool with existing radiators, right? (Condensation problems are serious, mini split heads are built to deal with this).

@LumberTrading Hopefully that excitement is longer lasting though, my 11 year old boy makes fun of them every chance he gets. . .

Find someone as excited to see you as much as a 10 year old boy loves to see a cyber truck

@pescami @mattyglesias @HistoryBoomer Worse how? I'm genuinely curious, what's the metric here, if this is 5% slower on an average city trip but 50 % less likely to be involved in an accident (from one very small number to an even smaller number of incidents) how do you value that?

@mattyglesias @HistoryBoomer Aren't they overly cautious to the point of being worse ?

@Tyler_A_Harper @ringofsour As someone who runs 100 milers, I recognize this as a similar obsession (even though it seems slightly nuts to me).

@ringofsour A ton of people who do this are distance runners. I run but I tap out at half marathons, however there are number of marathon runners and ultra runners who wetsuit.

Some people have asked questions about what gear we use for wetsuiting and how it all gets carried while swimming or deep wading. Most of it gets carried on a “surf” belt setup like you see here. I thought I’d do a quick explainer with some photos for those who are interested. 🧵

@MountainRoche @BRider9 I really liked this one, I found it to be the most illuminating interview with you recently. Particularly interesting that you have to be working pretty hard to need the 120+ g of carbs that you're eating in a race like that.

@BRider9 Thank you for sharing!!! It was so fun to talk to such smart people, I learned a ton from them over the years!

Fascinating interview with ⁦@MountainRoche⁩ about the science behind his record setting Leadville 100. podcasts.apple.com/us/podcast/the…

@aidstationfireb Rooting for Ludo to make his way through what's left of this field!

The men’s #UTMB field is decimated. A list of notable drops: Dunand-Pallaz, Blanchard, Meier, Hawker, Curmer, Gamito, Krogvig, Sandes, Garrivier, Tollefson, Walmsley, Barnette, Capell, Shen, Ji Duo, Dani Jung, Mityaev, Yanqiao Yun, Mathieu Clement, Ausserhoffer, Dhiman.

@mattyglesias People (ok, liberals) display a crazy double standard when they think it's wonderful to heat your house 90F above ambient temperatures in Maine or Vermont, but dangerous to use far less energy and cool your house 40F below ambient in Arizona.

@robertwiblin Are there good examples of people willing to take big risks when appropriate but play conservatively when that's the right move?

@robertwiblin It seems (from listening to interviews with Nate) that most of his subjects have risk tolerances in a narrow range, which sometimes works well and sometimes doesn't.

@mattyglesias Now go to a supermarket in Italy and try to find American (or even cheddar) cheese slices, or tortillas, etc. America not only has the supply chains, but the culture to appreciate global food.

@drvolts We were other places in Europe this summer and Booking seemed to have better options with far fewer extra fees across the board.

@jgault13 What!!!

Just one of the most bonkers Olympic 1500s you will ever see. -Cole Hocker GOLD -Two Americans medal and run 3:27 -Jakob does not medal -USA 1-3-5 in the most anticipated 1500 final in four decades

@LombardTrucking I do this a couple times a week. Often I listen to Odd Lots while I run. Results are mixed.

Worried about the financial markets? Go for a 10 mile run

@pescami Yeah sad but true. People on both sides seem to lose their minds a bit on this issue. Maybe because full inclusivity is explicitly not the goal of women's sport.

This is typical of the "not only am I right but no one with credibility could ever disagrees with me" mindset. It's called epistemic closure. As far as answering the "challenge" genspect.org/martina-navrat…

@jdcmedlock All these people fantasy drafting politicians. What about Tom Hanks? Can't he bring the country together like we all want?

I don’t feel good about Kamala’s electoral track record, but replacing Biden is already a challenging coordination problem, and skipping over Kamala would make it even more so - you’d need a perfect alternative everyone could agree on, and Newsom is not that

Kamala > Newsom

@mattyglesias Those were great days. I'd love to see more push for speed cameras next. Of course, the two go together. . .

@drvolts If it's an air/water heat pump, is it made to work in cold climates and keep the coolant loop from freezing?

@drvolts Can it use multiple thermal batteries so that it can provide space cooling at the same time as water heating?

@drvolts Where is the control of the unit? Can it learn your heating/hot water use and the typical amount of solar power available to perform better?