• 0 Posts
  • 36 Comments
Joined 3 years ago
cake
Cake day: June 15th, 2023

help-circle
  • I’m more concerned about the failure mode than the failure rates. Mechanical and hydraulic brakes can experience gradual failure, giving the driver a chance to pull over get the car repaired.

    EVs usually have a single motor and a single inverter , both of which can fail suddenly. Electronics usually work perfectly fine until they suddenly don’t work at all (blown fuse, bad connection, blown capacitor etc)

    How are they gonna build redundancy so that no single component failure means youre freewheeling downhill on the highway


  • Well that sounds terrifying. There’s a reason why the brake hydraulicsystem is actually two separate hydraulic systems, for diagonally opposite wheels. The only single-point-of-failure is the brake pedal.

    Their leaving out the critical details on how this will electric system will be fail safe, or even legal.

    The announcement was light on details about both the system itself and how its fail-safes are implemented.

    Maybe they’ll return to spring actuated mechanical brakes that are released when everything is working. (More common in heavy industry, and I believe also truck brakes)





  • In Norway, the trolley coined gained popularity as society went mostly cashless, yet the trolleys demanded their token. An earlier factor was that it was annoying to make sure you always had a coin of the correct denomination (physical size). Trolley coins can be part of your keychain, or won’t be accidentally used to buy a newspaper before going to the grocery store.

    Most people still return the trolley and slide it in, like civilized humans should





  • A key for each service for each device is too impractical in real life.

    Getting a new device would mean logging in to hundreds of services to link up the new device. Or somehow keep track of which services have keys with which devices. And signing up to a new service would mean having to remember to generate keys for a a handfull of devices, some of which might not be available at the time (like a desktop computer at home when you are out). Or you risk getting logged out if you loose the one device that had a key for that particular service.

    I agree passkeys can make sense with something like BitWarden or KeyPassX. Something that is FOSS, and is OS and device agnostic, and let’s you sync keys across devices. And should have independent backups too. Sync is not backup.


  • I use BitWarden too. OS , device and browser agnostic is a win

    But I imagine the vast amount of people will use whatever their platform is pushing, so Apple Google or Microsoft. And in 5 years time “3rd party passkeys” are not “secure enough” and blocked by the OS. (Ok that’s a bit tinfoil hat, but Google’s recent Android app developer verification scheme is fresh in mind)