Dave_Rosenthal

24 ms·

61.
by Dave_Rosenthal 4y ago
Although it may seem somehow unsavory, there is a long history of placing value on the probabilistic saving of human life (e.g. in highway engineering). We have limited resources in the world to save lives and doing the math is better than
62.
by Dave_Rosenthal 4y ago
Is this satire? If not, here's some: From a quick search it appears that subcutaneous fat can adversely affect the accuracy of an optical pulse oximeter. It sounds like everyone with a large BMI should get a class action going too. For
63.
by Dave_Rosenthal 4y ago
I'm curious about the word 'bias' here. From a technical perspective, does the pulse oximetry sensor just have more variance on darker skin (presumably from it being more opaque and signal to noise being worse), or is there a
64.
by Dave_Rosenthal 4y ago
Like many other commenters (of a certain age?), I too have this unsatisfied feeling about a particular kind of modern software development. The kind where you never really dig down and design anything, you just plumb a bunch of stuff toget
65.
by Dave_Rosenthal 4y ago
This whole thing seems so technical and hardware focused. Scan rates, debounce algorithms, USB packets, etc. and then it comes out halfway through the blog post that he's actually largely measuring how long it takes his finger to depre
66.
by Dave_Rosenthal 4y ago
I'm not a big fan of speed limits and speed traps, but some people just have an mis-calibrated sense of what's safe. Heck, even if you're well intentioned, calibrating to "safe" yourself is very hard because hitting
67.
by Dave_Rosenthal 4y ago
If neither prospective employee nor employer talk about salary up-front before investing many hours with interviews, travel, etc. that's just simply a screwup on both sides. This salary range thing won't fix that. Ready? The job l
68.
by Dave_Rosenthal 4y ago
Yes, sometimes a company is just hiring for several potential roles at once with one listing. The need for "more C# engineering skills on the team" might filled by a junior engineer for $X, a mid-career engineer for $1.5X, a senio
69.
by Dave_Rosenthal 4y ago
The report was great, and answers a lot of questions everyone had. I'm especially glad to see you applied your tools to OTB games. The only disappointing thing was the focus on how fast Hans' rating soared after he hit 2500, and h
70.
by Dave_Rosenthal 4y ago
There is a guy named Ken Regan who is one of the leading experts in this question of whether the correlation with engine moves is at a normal or abnormal level. His statement is that he analyzed the last two years of Hans' games and fo
71.
by Dave_Rosenthal 4y ago
I remember being ~23 and telling someone a generation older, "Yeah, it's crazy; I've been out of college for 2 years but I still have awful dreams about being late for class and showing up for a test I forgot about." I w
72.
by Dave_Rosenthal 4y ago
bicyclerollingresistance.com
73.
by Dave_Rosenthal 4y ago
The answer is to use taxpayer money to buy the water rights from the farmers who will sell it the cheapest. The state can then use it for something they deem more valuable, perhaps urban usage.
74.
by Dave_Rosenthal 4y ago
I've been spending a lot of time outdoors lately (climbing, hiking, etc.) and started fooling around with making my own gear. I've always been interested in the engineering/design challenge of working with flexible materials.
75.
by Dave_Rosenthal 4y ago
Honest question, is there any good reason for doing solar on buildings in urban areas? It seems like solar power it should be considerably less expensive from large installations on cheaper land outside the city. The only reasons I can thin
76.
by Dave_Rosenthal 4y ago
Was in SF a week ago and my Uber driver took an illegal u-turn. He noticed me being quizzical and said that police don’t enforce anything anymore. He said a few years ago they had a big push to enforce traffic laws to the letter and everyon
77.
by Dave_Rosenthal 4y ago
There is a great (always busy) sandwich shop in Boston called Darwin's that I used to go to a lot that worked that way. When a customer placed an order they would call down the long line, "anyone else for an X?", then make ma
78.
by Dave_Rosenthal 4y ago
Yep, ring laser gyro :) They are pretty awesome. Once got some data that seemed to be bad out of one and realized that the entire error was exactly accounted for by the Coriolis effect from the rotation of the earth.
79.
by Dave_Rosenthal 4y ago
If you think of world/local news simply as form of entertainment that you don't enjoy, you'll feel no moral pain from abstaining. I quit ~15 years ago and have no regrets. However, I do think it's important to build a la
80.
by Dave_Rosenthal 4y ago
The segmented design of the mirror creates diffraction effects vs. Hubble's single mirror.
81.
by Dave_Rosenthal 4y ago
Yeah, as resolutions climb autofocus not being aligned exactly to the sensor is a bigger and bigger problem. I have a very high res (mirrored) medium format system and keeping the “focus trim” set correctly to align the AF system with senso
82.
by Dave_Rosenthal 4y ago
Yep, I’ve had (mirrored) Canon DSLRs and lenses for 20+ years (since the original D30) and just this past week sold the entire system. I hadn’t picked it up since I got the mirrorless R5 a couple of years ago.
83.
by Dave_Rosenthal 4y ago
My theory is just that video conference applications should inject whatever horrible things you are doing to your image to the other image :) If your camera shakes while you type, your view of the other person will shake too. If you have a
84.
by Dave_Rosenthal 4y ago
I tend to agree with this conventional Econ 101 wisdom, but your comment got me wondering if raising the minimum wage would have an effect of driving people to build skills and push harder. I.e. think of a minimum wage as the government say
85.
by Dave_Rosenthal 4y ago
Slight tweak: it's 30 microseconds, not 30 milliseconds. But I wholeheartedly agree with your points!
86.
by Dave_Rosenthal 4y ago
Yeah, I was too till I tried it. Thousands of miles of instant, perfect shifts at the light touch of a button with no adjusting, no cable clutter, no cleaning, etc. is very nice. It would all be worthless if the electronic shifters were in
87.
by Dave_Rosenthal 4y ago
My understanding is that 50V is the established threshold above which safety to humans starts to be a factor. So, applications that want high powers, without the penalty of large wires nor the penalty of the safety requirements of an HV sys
88.
by Dave_Rosenthal 4y ago
So points in a circle is pretty basic, but it does remind me of a nice 3Blue1Brown video ( https://www.youtube.com/watch?v=mZBwsm6B280 ) about random chords of a circle. Some of these 'generate a random sample' situ
89.
by Dave_Rosenthal 4y ago
Yeah, a dark sky in a B&W photo is one of the most obvious ones (red filter). The other one that jumps to mind is white/bright foliage (infrared filter).
90.
by Dave_Rosenthal 4y ago
I wonder how good they can make the feel without a direct connection to the road? For example, as you stand on a bike stopped at an intersection you have your foot resting on the petal, ready to take off. As you launch, you put a lot of for

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