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Comment Missed Opportunity (Score 1) 32

Chris McLean, president of Critical Facility Group, said that rack heights have grown from 6 feet to 9 feet over nearly two decades, creating problems with doorframes and freight elevators in older buildings.

Missed a perfect opportunity for a better headline: "The Rack is Too...Damn...High" [ref]

Comment Re:Add Random Latency to Trades (Score 2) 66

An alternate (although mathematically similar) approach would be:

Select a unit of time: let's say five seconds. Call that the Trade Time Slice. Within each Trade Time Slice, all trades are settled equally. If you happen to arrive a nanosecond sooner than the next guy, but you're both within the same 5-s interval (Trade Time Slice), both trades get the same timestamp and price, rather than the strictly FIFO behavior we have now.

Yes, there'd still be an incentive to show up sooner than the next guy, because that makes it slightly more likely that you'll end up in one Trade Time Slice, while the other guy just misses it and ends up in the next Trade Time Slice. But quibbling over 3.2 ns makes that a less than a one-in-a-billion proposition for a 5-second Trade Time Slice. That may still matter to some, and they can try to game it if they'd like, but it'd make High Speed Trading a tiny niche of the market, rather than a major player.

Some purists might say "but that'll add needless friction to the market; they'll be less efficient at finding the optimal price!" To which I would say: prove to me that ordinary investors are harmed by markets marching in 5-s intervals rather than nanoseconds. It may harm high-speed traders, because they won't be able to play their games and siphon their profits from all other traders, but that's hardly the same as saying the market is no longer functioning "correctly".

Comment Re:Rejected the AMZN Aquisition? (Score 1) 98

That may explain it. I have a Qrevo S, which is from 2024, while yours is from 2022. The only thing that it ever gets stuck at is one spot where, from under the couch, it can see out the ground-level window, and get stuck between the couch and window ledge (not actually stuck, just confused), because the LiDAR sees out the window. And I fixed that just by setting a small exclusion zone there. It never "gets lost" - maybe your house has some vast open spaces that it can't handle? But the LiDAR seems to see pretty far. The only other issues I've had are things like where I'll have a loose cord on the floor or some large piece of debris or whatnot, and even then, it's usually good at not getting stock on them. I'm also impressed with how well it deals with doors vs. a Roomba - my Roomba used to always get itself locked in rooms by accidentally closing doors after it entered, while the Roborock really tries to avoid ever touching them.

The Qrevo S has actually rotating mops, and they do a superb job with the floor. Spotless. My robot has the hardest mopping job in the world, too - it has to clean under my parrot's cage, and he poops off the edge onto a plastic mat under it ;)

I've never had to contact support - hopefully I don't need to :)

Comment Related tidbit (Score 5, Interesting) 70

A subsequent mission did install a similar listening station and RTG. But each time they visited it thereafter, the RTG had buried itself deeper into the surrounding snow. So the thinking now is that the one on Nanda Devi, after falling in an avalanche, gradually melted its way down deeper into the glacier until it hit rock.

Comment Re:Robot vacuum cleaners - meh (Score 1) 98

A real vacuum cleaner just about maxes out a standard residential 120v 15a circuit, as anyone who remembers the incandescent bulb era can attest to. A circuit with a few lamps shared with a vacuum cleaner could easily end with you flipping a breaker or replacing a blown fuse.

When you look at the absolutely tiny lithium ion pack these robo-vacs come with, ...

Sitting on my kitchen table right now is a drone pack. It's 57,5Wh, smaller the batteries of most modern Roombas. It's 50C - thus it can output up to 2,9kW. And there's even higher packs available than that. Lithium ion cells can handle some truly high power outputs. It's *energy*, not *power*, that is their limitation. Run a pack at 50C and it'll be empty in a bit over a minute. That said, on hard floor surfaces there is absolutely no reason why you should be drawing more than 300-400W or so, and you can get by with well less than that. High powers are for like shag carpeting and the like. Also, the head matters more than the power (though of course contribute) - for a hard floor, for example, a fluffy roller head is ideal.

Comment Re:Rejected the AMZN Aquisition? (Score 3, Insightful) 98

Facts. I used to have a Roomba for years, but as I live in Europe, it was getting increasingly hard to deal with modern features (like the self-emptying base which needs 120V power). I reluctantly switched to a Roborock when my power converter died, and just, wow, they're light years ahead of iRobot. I think iRobot has been coasting on its name for a while now.

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