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Cake day: June 12th, 2023

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  • Sailboats can operate at lower power levels, because their displacement hull is efficient at low speeds. (Where a planeing hull needs higher speeds to get more efficient.) When I had solar electric sail boat, I could motor at 2 knots with no wind using only 500w of solar without touching the battery. I usually ran it at 3.5 knots if there was no wind, which gave me lots of range on battery for a full day on the water.

    They also have the sail as a primary power source when there’s enough wind, so you don’t always need the electric motor. Sometimes, if the wind is strong enough, you can use the water turning the propeller to generate electricity to charge the battery. Or if the wind is light, you can use the motor to add more speed than sail alone, using less battery than using electric alone.











  • But Recall is recording screenshots, not data stored on disk. That’s not the same as Apple’s hourly data snapshot which is just a automated backup of what you have already stored. Recall will be recording the videos or images you watch, even when you don’t keep them locally. It will store the things you decided not to save, and every time you have to open your password manager to check a password, or create a new one. It might be limited to your account, but that still means it’s accessible to anyone who can figure out your password or access your unlocked PC behind your back. Or to that virus you accidentally downloaded, if it’s not immediately detected.


  • They are cancelling flights because those specific airports don’t have the equipment to provide a precision landing (ILS) during low visibility weather. They only published a landing procedure with GPS. They will now spend a few months installing the ILS system to enable such landings so they can resume commercial flights.

    Before GPS, all airports would be either VFR only or would have an ILS system installed. Since then, some airports were built without an expensive ILS but used a published GPS approach to allow low-vis landings.

    They could have continued flights with only VFR navigation, but that would seriously restrict the weather they could operate in.



  • My bank has called me a few times. Each time they ask about specific transactions, so it’s mostly yes/no answers. (Occasionally I’ve asked for additional clarifying info, but they never asked about card numbers or the like.) Usually it’s been abnormal transactions that i know about, but a few times it was a cloned card number being used elsewhere, (before chip became standard) and then I had the card shut down.