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Joined 1 year ago
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Cake day: June 6th, 2023

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  • If it doesn’t come at the expense of battery wear, then sure, lower charge time is just better. But that would make phone batteries the only batteries that don’t get excessively stressed when fast charging. Yeah, phone manufacturers generally claim that fast charging is perfectly fine for the battery, but I’m not sure I believe them too much when battery degradation is one of the main reasons people buy new phones.

    I have no clue how other manufacturers do it (so for all I know they could all be doing it right and actually use slow charging), but Google has a terrible implementation of battery conservation - Pixels just fast charge to 80%, then wait until some specific time before the alarm, then fast charge the rest. Compare that to a crappy Lenovo IdeaPad laptop I have that has a battery conservation feature that sets a charge limit AND a power limit (60% with 25W charging), because it wouldn’t make sense to limit the charge and still use full 65W for charging.


  • It doesn’t slow charge, at least not on Pixel 7a. Well, you could argue whether 20W is slow charging, but it’s all this phone can do.

    It just charges normally to 80%, stops, and then resumes charging about an hour or two before the alarm. And last time I used it, it had a cool bug where if it fails to reach 80% by the point in time when it’s supposed to resume charging, it will just stop charging no matter what the current charge level is. Since that experience, I just turned this feature off and charge it in whenever it starts running low.


  • Cheap Bluetooth might have connection hitches

    Fair enough, but I’ve only ever seen this happen with cheap wireless cards / chipsets that do both Bluetooth and WiFi and don’t properly avoid interference between these two (for example, I can get perfectly functioning Bluetooth audio out of my laptop with shitty Realtek wireless card if I completely disable WiFi (not just disconnect)). I think this is less of an issue for dedicated Bluetooth devices.

    Bluetooth doesn’t work with airplane mode although I think most airplanes these days aren’t actually affected or we’d have planes dropping out if the sky daily.

    Yeah, that’s true. As for the second part, AFAIK there was never an issue with 2.4 GHz radios (which is the frequency band Bluetooth uses) interfering with planes, it was more of a liability / laws thing - the plane manufacturer never explicitly said that these radios are safe (so the airline just banned them to be safe) and/or laws didn’t allow non-certified radios to operate on planes.

    Also, does Bluetooth get saturated the way WiFi does?

    Eventually yes, but it’s much more resilient than WiFi - 2.4 GHz WiFi only has three non-overlapping channels to work with (and there’s a whole thing with the in-between channels being even worse for everyone involved than everyone just using the same correct three channels that I won’t get into), while Bluetooth slices the same spectrum into 79 fully usable channels. It also uses much lower transmission power, so signal travels a shorter distance. And unlike WiFi, it can dynamically migrate from channel to channel (in fact, it does this even without any interference). 100 people actually seeing each other’s devices might be a problem, but I don’t think that’s a realistic scenario - Bluetooth will use the lowest transmit power at which it can get a reliable link, so if everyone’s devices are only transmitting over a meter or so, there shouldn’t be any noticeable interference on the other side of the plane.


  • I don’t really see the big problem here? Like sure, it’s silly that it’s cheaper to make wireless headphones than wired ones (I assume - the manufacturers are clearly not too bothered by trademarks and stuff if they put the Lightning logo on it so they wouldn’t avoid wired solution just due to licensing fees), but what business does Apple have in cracking down on this? Other than the obvious issues with trademarks, but those would be present even if it were true wired earphones. It’s just a knockoff manufacturer.

    Cheapest possible wired earphones won’t sound much better than the cheapest possible wireless ones, so sound quality probably isn’t a factor. And on the plus side, you don’t have multiple batteries to worry about, or you could do something funny, like plugging the earphones into a powerbank in your pocket and have a freak “hybrid” earphones with multi-day battery (they’re not wireless, but also not tethered to your phone). On the other side, you do waste some power on the wireless link, which is not good for the environment in the long run (the batteries involved will see marginally more wear)

    Honestly the biggest issue in my mind is forcing people to turn on Bluetooth, but I don’t think this will change anyone’s habits - people who don’t know what Bluetooth is will definitely just leave it on anyway (it’s the default state), and people technical enough to want to turn it off will recognize that there’s something fishy about these earphones.



  • Yeah, it’s not practical right now, but in 10 years? Who knows, we might finally have some built-in AI accelerator capable of running big neural networks on consumer CPUs by then (we do have AI accelerators in a large chunk of current CPUs, but they’re not up to the task yet). The system memory should also go up now that memory-hungry AI is inching closer to mainstream use.

    Sure, Internet bandwidth will also increase, meaning this compression will be less important, but on the other hand, it’s not like we’ve stopped improving video codecs after h.264 because it was good enough - there are better codecs now even though we have the resources to handle bigger h.264 videos.

    The technology doesn’t have to be useful right now - for example, neural networks capable of learning have been studied since the 1940s, even though there would be no way to run them for many decades, and it would take even longer to run them in a useful capacity. But now that we have the technology to do so, they enjoy rapid progress building on top of that original foundation.