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Joined 2 years ago
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Cake day: April 6th, 2024

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  • Heat pumps easily exceed 2.5 COP. More like 4 in the UK climate. And gas isn’t 100% efficient either. But yeah it’s a wash or can be more expensive to heat with heat pumps where electricity is really expensive. It helps if we all conveniently ignore externalities like pollution and carbon too.


  • What are you actually advocating for here? Not electrifying and waiting another few decades for hydrogen? You come off as excessively defensive of the practically nonexistent H2 industry and excessively critical of electrification, which is basically the Shell and Exxon position. We don’t have time wait for anything, we need to use the tech we have now to reduce warming. Where do we get the hydrogen in your world? Is it blue or green? Blue is just fossil fuels with extra steps and green doesn’t make sense until we have significant excess renewables and already electrified the easy stuff (buildings) and then it might still make sense only for industry/shipping and niche stuff. H2 itself has a GWP of 11 or so, and we will leak quite a bit. So again, what are you actually arguing for? I can’t buy hydrogen, period. I can’t buy a hydrogen vehicle, or a hydrogen furnace, or a hydrogen anything. What do you actually think we plebs should be doing here? I already want green steel as much as you do.







  • It’s just microclimates. I particularly hate the article’s framing of white materials as “geoengineering”, which implies that black asphalt roofs and roads are somehow not. We also know urban heat islands shift moisture downwind. So they’ve modeled some micro interaction that shows piecemeal application of low and high albedo surfaces can possibly result in some weird local effects on precipitation, all packaged up for misinterpretation by EPDM manufacturers.

    Meanwhile everyone with a brain knows that black asphalt and roofs are hotter than white surfaces. The solution is of course stop black roofs and the bate minimum amount of roads/parking lots, not try to make everything heat absorptive in the name of equality.









  • Maybe the study was more robust that this article suggests, but this doesn’t tell me anything. Humans are amazing at regulating our remperature via sweat, so I have zero doubt that normal healthy people will have the same internal and even skin temps wearing different color clothing in different conditions. If the group wearing e.g. dark codlors just sweat X% more to compensate, we can’t draw any conclusions at all. Clothing is complicated, since airflow and moisture retention matter significantly, but we know for a fact that lighter colors reflect more energy than darker colors.


  • Appreciate the conversation, and I definitely bat an eye at the overpriced mall crawlers people blow absurd amounts of money on to get groceries. I actually do think a $50k car is generally a bit nicer than a 20k car, so in my analogy that could maybe be justified, but $120k is getting a bit silly with marginal gains that are not meaningful (to me at least).

    But back to bikes, curious of you’re actually able to compare these bikes you mentioned apples to apples. Same geometry, saddle, tires, grip tape, etc? If it’s frame compliance you’re after, I’m curious for your thoughts on some of the higher end steel frames out there. I ride mostly gravel and am large, so e.g long setback seatposts and 45mm tires soak up everything to the point that frame compliance matters less (but still some of course). I could see that being a bigger deal for smaller/lighter riders though. On the other end of the spectrum for trail bikes the frame just needs to be stiff, so I see zero benefit to carbon there (outside weight of course, but thankfully people learned to care less about weight in the MTB world finally). Back to road I’d also argue aero matters more than those last few grams for just about everything outside of massive climbs. I recall hearing that on any road below 7-8%, aero is still “more important” than weight, meaning you should spend your money there instead. Who knows though, every few years there’s a new trend and every few years I find I value comfort over speed even more.

    I just love riding bikes and I spend way too much time learning about tech I have very little desire to actually buy. I’m glad you found a bike you’re super stoked to ride, that’s what that matters at the end of the day!


  • Look I get it, I love cycling and own a few nice bikes ($1-4k) but let’s not pretend that the value is there at $11k. Outside of world tour riders, there’s no way you’re actually faster or more comfortable at $11k than about $5k. You already get carbon frame/wheels and near top of the line components for $5k-ish. So to OPs question, to me that’s the upper limit for what fancy bikes should cost for actual normal humans. Realistically 2k for road/gravel, maybe 3k for MTB is jusy barely slower and almost imperceptively less nice than 5k bikes. “High end” is only meaningful if there are actual tangible benefits that come along with the price tag. I support anyone out there on bikes, i just think $11k is a bit silly in a world with this much wealth inequality. I’m sure some folks think the exact same thing about me and my bikes tbf. Have fun and be safe out there.



  • Turkeys are super cool, but it’s still a bit silly to apply human values to wild animals. Pretty much all animals are wired to survive while expending the least amount of energy and reducing risk to themselves. Stealing catches from other animals is quite common across species because it’s easier and safer. The reality is that it’s brutal out there. I don’t have diminished admiration for a bear because it found some food in a trash can instead of catching fish from a stream.