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Cake day: June 18th, 2023

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  • 802.11ax, clients just… (essentially) wait for a random amount of time, listen for a break in the signal, and take a leap of faith.

    Ethernet originally worked the same way, back when it competed directly against token ring. Ethernet won by being as reliable in real world scenarios while being cheaper to build out. Gigabit Ethernet was the first standard that insisted on full duplex only.

    Half duplex mode with the collision avoidance is still actively supported for 10/100, but it is becoming very hard to find an unswitched hub. So you may have to write up your own twisted pair cables.



  • When you enter the United States, customs “inspects” all the stuff you’re bringing back. If it’s more than $850 worth of stuff, then you have to go to the cashier and pay a tax.

    The tax is a percent of what the stuff is worth. The percent rate can depend on what type of goods it is, and what country it’s coming from. There are massive tables to look this stuff up.

    The stuff you carried out of the country and are now bringing back with you doesn’t count toward the $850 limit.

    If you’re shipping stuff in but not traveling with it, there is no exemption. Tax applies right away. You also have to hire a guy called a broker to help you with the CBP paperwork and to submit payment.

    So let’s say somebody is importing sugar from the Caribbean, and there’s a tariff. They have to pay a percent to the feds every time they ship in some sugar. They raise the price they charge on the sugar to cover that. Then sugar from Louisiana looks more attractive on the store shelf because it’s cheaper.

    Who pays? Whoever is shipping the goods in pays, but they make it up by charging more for the imported products.

    Why do it? Usually, you want to make some domestic industry more attractive by raising the price of the foreign competition.

    In the sugar example, sugar is more expensive to farm in Louisiana because people get paid more, and the equipment is more expensive. If there wasn’t a tariff, people might stop farming sugar in Louisiana entirely. That might make some people sad. On the other hand, all Americans would be able to pay less for sugar without the tariff.








  • mkwt@lemmy.worldtoMemes@lemmy.mlEnd Monopoly & Restart
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    1 month ago

    Most games I’ve seen, nobody ever horse trades for color groups.

    Complex deals and negotiations, land swaps, leveraged buyouts, and free rent passes, are all supposed to be part of the game. Getting a color group solely by landing on the spaces first and buying them for list price is indeed rare, by design.

    This leads to my other pet peeve… You’re not supposed to have enough money to go around the board the first time and buy every space you land on at the list price. You’re supposed to be forced to make strategic decisions from the beginning of the game about what you go for, and what you bid in the auctions.

    Most of the made up “house rules” are really about circulating more money into the game than is supposed to be there.


  • You should also know that because of jail and various other teleports, the orange group is the most popular group on the board. It’s something like 1.8 times the average to land on those spaces, because two of them are 6 and 8 spaces from jail. Jail is a very popular space because Go To Jail also counts as Jail.

    Boardwalk has very high rents, but it’s also pretty unpopular to land on.

    The worst rent-to-popularity values are yellow and green.



  • (not a lawyer). If you bought the game copies that the AIs are playing, then it seems like you’re not making a copy of the game just to have the AI play it.

    That kind of assumes that your AI is playing the game through a mechanism like AutoHotKey, generating keyboard or controller inputs that pass through the operating system to the game.

    If your AI hooks into or modifies the game code to “play”, then it could run afoul of anti-reverse engineering clauses that are common in the click through license agreements. Those clauses may not be enforceable in your jurisdiction. Legal results on anti-reverse engineering clauses are kind of mixed in the United States.

    Edit: for reference, there was a software called “Glider” that played World of Warcraft for you, so you don’t have to grind to level up. Blizzard absolutely hated the makers of Glider, but it stuck around for a long time, before it was ultimately sued into oblivion.


  • Here’s my guess. I don’t know anything about this particular device, but I have worked with medical devices.

    A powered exo-skeleton sounds like it might be a class II medical device. Being a medical device, the OEM was required to produce a safety risk analysis per ISO 14971 in the EU and 21 CFR 820 in the US. I don’t know what all was listed, but probably one of the safety risks was thermal runaway from the (assumed) lithium ion batteries.

    Lithium ion battery packs have a well known problem with occasionally overheating and catching fire. This famously delayed the launch of the 787 Dreamliner. This is also why you can’t put your phone or laptop battery into your checked luggage.

    In the original risk analysis, there will be a number of mitigation steps identified for each hazard. For the lithium thermal runway, these probably include a mix of temperature monitoring, overheat shutdown, and passive design features in the battery pack itself to try to keep the impacts of over temperature and fire away from the patient.

    So how does the price get to 100k? It could be some kind of unique design features that are now out of production and the original tooling is not available. The 100k cost is probably something like to redesign the production tooling, particularly if you have to remake injection molds.

    You can’t just use any off the shelf battery pack, because that would invalidate the risk analysis. You’d need to redo the risk analysis, repeat at least some amount of validation testing, and possibly resubmit an application to the FDA.

    TLDR: you can get some MEs and EEs together to solve this problem, but once they’re on the case, you can blow through 100k real fast.