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Cake day: June 13th, 2023

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  • incogtino@lemmy.ziptoScience Memes@mander.xyz[XKCD] Pascal's Law
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    25 days ago

    You can loosely think of hydraulics like pulleys, whatever ratio of input to output power you create is accompanied by a reduction in distance moved.

    So a weight of 1kg on an area of 1sqm could balance a weight of 10kg on an area of 10sqm, but moving the 1kg would only generate 1m of travel for every 10m of movement applied.

    If you try and displace 1sqm by 10m, you are displacing 10 cubic metres. If you use that displacement to move an area 10x the size, it need only move 1/10 of the distance i.e. 1 metre

    You need to keep adding weight (force) to achieve the movement. The initial weight will only balance the system.

    I assume that the comic is about breaking apart the mountain, you don’t have to move far at all to achieve destruction. You also need a watertight system.






  • I wasn’t thinking in detail, just addressing an assumption I think a lot of age verification discussions include, which is that the verifier would have to be trusted to maintain some sort of account for you, retaining your data etc.

    I have no idea what the legislation says, but I’d be a happier privacy-conscious user if the verification platforms were independent (i.e. not in any other data business) and regulated, with a requirement they don’t retain my personal data at all (like the liquor store example)

    So the verifier gathers data from you, matches it with a request from the platform, provides confirmation that some standard has been met, and deletes almost all personal information - I acknowledge that this may not rise to the double-blind standard of the original request

    Edited to add:

    • you don’t have to ‘buy’ a token, the platform needs to pay verifiers as a cost of business

    • some other comments are asking how you prevent the verifier knowing the platform - to my mind you don’t, instead the verifier retains a request id record from the platform, but forgets entirely who you are