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Joined 3 years ago
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Cake day: July 15th, 2023

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  • In North America and Europe, tap to pay was implemented prior to smartphones that could scan QR codes being ubiquitous. Most of us have had cards that support NFC payments for longer than we have had a phone that can read QR codes so it made sense for phones to pick up the technology that worked with the terminals businesses already had than try to implement a new system.

    The QR code thing is primarily a Chinese solution to the payment problem (all other Asian countries I’ve been to have widespread NFC acceptance). Payment cards were never widespread within China the way they are in other places, until AliPay and WeChat Pay became a thing people still primarily used cash for their daily communications. If businesses don’t already have credit card terminals but people have smartphones then the QR code starts to make more sense.

    One interesting thing about this is that even before North America was widely using NFC payments, people in Hong Kong were using their Octopus transit cards as contactless payment at all kinds of businesses throughout the city. Yet that technology didn’t seems to make it into Mainland China.




  • now on the 4th update it keep failing for some reason.

    Running an Arch based distro comes with a commitment to learning “the Arch way”. You need to be willing to look at the terminal output of pacman and see what the errors mean. Being close to bleeding edge means that on occasion something will fail or end up in a state that you need to resolve. Its usually easy, but you need to pay attention to what pacman is telling you. If that isn’t something someone is interested in there are plenty of other excellent distros out there that will meet their needs.









  • I typically build a whole new PC and then do a mid-life GPU upgrade after a couple generations. e.g. I just upgraded my GPU I bought in late 2020. For most users there just isn’t a good reason to be upgrading your CPU that frequently.

    I can see why some people would upgrade their GPU every generation. I was suprised at how expensive even 2 generations old card are going for on ebay, if you buy a new card and sell your old one every couple years the “net cost per year” of usage is pretty constant.






  • Yes, given the comment about averaging with the neighbours green will be overrepresented in the average. An additional (smaller) factor is that the colour filters aren’t perfect, and green in particular often has some signficant sensitivity to wavelengths that the red and blue colour filters are meant to pick up.

    edit: One other factor I forgot, green photosites are often more sensitive than the red and blue photosites.