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Joined 3 years ago
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Cake day: June 15th, 2023

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  • That just isn’t true.

    If you want a well researched and referenced argument. Here is a good one.

    It takes far more people to build, maintain, and service airplanes and the infrastructure to support them than to do the same for trains, and even when traveling a train requires fewer personnel per passenger-kilometer.

    If you’re moving the goalposts to include all the infrastructure of air travel, then you must also include the infrastructure costs of long haul rail travel. Building out new rail travel for hundreds of miles of long haul service (which is what I think OP is looking at, and what I specifically replied to) is monstrously expensive.

    Airplanes and cars are massively subsidized

    Can you point me at examples unsubsidized financially self sustaining (profitable) long haul rail anywhere in the world?

    and their uncovered externalities are much more costly to society too.

    We’ve to enough moving parts in this conversation. Lets table this one to include actual costs paid and ticket prices please.


  • Even the hassle of flying is worth the time and money saved.

    You’ve touched on the answer here. The answer is duration of travel. The same labor that is required to move one trainload of passengers on a long haul route can move many many times that number of passengers on an aircraft simply because the aircraft spends less time traveling. So the cost of the tickets must rise to cover the costs and eek out some profit.



  • First, I think we both don’t like the Pi5. So we are in agreement on that. If you want we can stop right there on the same page.

    I’m not sure why you’re referring to the Pi4

    My first post in this thread was talking about low power and small physical size. I was talking about all Raspberry Pis in general. I never put forth the Pi5. You did when you raised the 5V5A requirement. That exists only on the Pi5. You’ll also see in that first post of mine is where I disavowed any recommendation of Pi5.

    You then went on in your next post about Raspberry Pis needing active cooling and heat sinks. Again, that is only the Pi5, which again, I said I don’t support.

    So if you’re wondering why I keep talking about Pi4 and below is because those are the ones I like. In this thread you keep posting facts about Pi5 (without pointing out that those only apply to Pi5), and so that’s why I keep referring to Pi4 (and below).

    You say you don’t use or recommend the Pi5 and yet you’re seemingly arguing that its power supply requirements aren’t a big deal and that improvements should absolutely not be made to it.

    I’m arguing power supply requirements shouldn’t be made to Pi4 (or below). I don’t use Pi5.





  • Low power draw but ridiculous power supply requirements of 5V5A (depending on the model) with a USB-C connector which isnt a thing outside of this specific application meaning they’re going to be expensive and hard to source.

    That’s only for the Pi 5 (the highest end unit), and I’ll agree that at that level its hard to justify a Pi over a larger computer. Even for the Pi 5 its not that hard to find those Power Supplies. Most laptops today use power supplies that meet or exceed those specs. You’re right that those are more expensive than Pi 4 and below Power Supplies.

    They should have just done a barrel plug or put an effing voltage regulator on board like Arduinos.

    Again, no defense of Pi 5 from me. However, for everything below Pi 5, HARD PASS on a voltage regulator. I don’t want that heat in the tiny Pi case. At the lower power requirements of Pi4 and below USB power is fine.









  • There is legal obligation to honor the shelf tag if it says a product should be lower than what it rang up for.

    At the federal level (in the USA at least), there isn’t. Some states might, no law covering the entire nation.

    Otherwise it’s essentially a bait and switch, and can usually get a store in trouble if a customer complains to the right people.

    The legal barrier for “bait and switch” is higher than that. Bait and switch is if the price is intentionally lowered and advertised, then raised or not offered when the customer tries to buy. If a customer took one of these “expired shelf tag” situations to court, the retailer could easily point to their sale promo from the week before showing the price was valid at that time, but that the old shelf tag hadn’t been properly taken down. The retailer would win, but the retailer knows this too and the cost of legal representation, bad press, and losing a customer usually isn’t worth winning the legal argument, so they usually just honor the mistakenly lower price and move on.




  • Every 5 years go so I think about getting into powered paragliding. It looks amazing! Inevitably each time I find youtube videos talking about how much progress has occurred in the industry…and a heartfelt eulogy about a wildly experienced paraglider pilot that died recently while paragliding. I always turn away with the same thought: “If the very experienced people are dying like this, it is far riskier form me to try.”