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Joined 1 year ago
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Cake day: July 14th, 2023

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  • Interesting. I saw the Qidi X-Plus 3 advertises 600mm/s vs Bambu P1S 500mm/s. And the P1S doesn’t offer a heated chamber. Have you noticed a difference in quality from the heated chamber?

    I haven’t yet been convinced of the bambu cool-aid mainly because of closed software. Klipper support is a big value prop. Who knows how long bambu will support OS versions and what happens if they start charging for cloud. It’s a young company, so not a lot of confidence yet.




  • I understand something like a GMC Suburban or a Cadillac Escalade, but the Porsche Macan (in article thumbnail) and many other compact SUVs take up the same curb space and about the same weight and length as a standard sedan.

    • Porsche Macan (SUV): 4400lbs, 186.1"
    • Honda CRV (SUV): 3285lbs, 184.8"
    • Audi A4 (sedan): 3700lbs, 187.5"
    • Pegeout 508 (sedan): 3290lbs, 187"

    vs

    • Cadillac Escalade (SUV): 6200lbs, 211"
    • Range Rover (SUV): 6025lbs, 207"

    Unless they put weighted meters at every parking space, would be interesting to see how they enforce this. Compact-SUVs are useful and are well equipped for their weight (AWD, safety features, space-efficient).

    Here is a cool chart showing weight vs road wear. Not sure how scientific it is, but shows cars around 4000lbs are considered normal wear.

    Unless the goal is to move drivers to the subcompact-sedan form factor.

    • Mini Cooper: 3144lbs, 159.1"
    • Citreon C3: 2226lbs, 156.7"

    Then they could make low cost parking spaces ~170" long and any cars that do not fit in that would have to go in the bigger spaces with a higher rate. Very curious how they would implement it without costing the tax payer too much.



  • I appreciate your opinion. I know that the qualification I made is a controversial one as everyone wants to be an ‘engineer’, but I’m still confident it holds. Applying physics is not purely at the atomic level. In web development, one of the physical challenges can be bandwidth, however, while most people claim to concerned about bandwidth, in reality they don’t do anything about it. Minifying code is cool, but that’s not doing any engineering by itself. Calculating the throughput your datacenter can dish out for your 1million users as you write a function that optimizes load vs lag of streaming video, that’s engineering.

    Thinking about user interaction and experience is more psychological than it is physical in most cases. Designing the user experience of a medical device or cockpit switch are both not automatically qualified for engineering: unless, you are designing the medical interface to overcome spasms that someone with Parkinson’s has, or, the cockpit switch is designed with a plastic mix to survive the temperature, vibration or weight requirement, it’s going to be more of an art-than-science. I’m not saying one is worse, but we need to make the distinction between designers, developers, scientists and engineers.

    I understand that everyone wants to be an engineer, whether for pride or just to feel more important (hell I want the engineer title too). Unfortunately, the tech industry (with arguably one of the most conflated egos) liberally tossed around software engineering to every role to attract talent and I don’t see that changing. It’s a profession, so whatever you are being paid to do will determine if you are engineering


  • I typically tell people that engineering is applying physics. If you aren’t directly interacting with the physical world, you are most likely a developer.

    Working on an app, no matter how complex (or unessarily convoluted) generally makes you a developer. If you aren’t thinking about impact of clock cycles, actuation/hardware interfaces or sensing, there is a high chance that the work you do has little to no risk or a chance of failure that is governed by the physical world. As said in other comments, engineers design and sign off on things. There is an implication that there is an unknown constraint, unlike a fully observable software environment.