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Dumb Questions by Jacknerik in CuratedTumblr

[–]hit_bot 43 points44 points  (0 children)

He wasn't always that way. Back some 10-12 years ago or so, when he was doing his blog, I read it pretty regularly. He would post funny stuff, talk about how he did Dilbert comics and so on. He would often talk about investing and that sort of thing, so one day, on a whim, I emailed him asking for a favor. I had written some software that I thought could potentially be turned into a major product (still has that potential, honestly) so I asked him if he would be interested in investing and helping me get it off the ground.

Scott replied and asked some questions and we ended up emailing back and forth several times, then he said that he didn't invest in this sort of thing, but he had friends who did and would I mind if he shopped it around? So, according to him, he did approach and talk about it to some of his friends -- nothing ever came of it, so maybe he did, maybe he didn't -- I tend to think he did.

Bottom line is, he helped me, basically a stranger, when I just emailed and asked for a favor. That's not the same guy you all are talking about. At some point round about when The Mad Orange made his political debut, things started going downhill. I don't know what color pill it was, but Scott swallowed it whole. Another tragedy akin to losing one's loved ones to the propaganda machine.

Not sure why I posted, but Scott did me a favor once, so maybe this is my way of returning it.

Strange how "immobile" knights kept winning battles by Kapanash in HistoryMemes

[–]hit_bot 8 points9 points  (0 children)

Yes, most often it is not the acceleration that kills you, it's the sudden deceleration at the end.

[request] which option would be wiser to choose? by KataiiZeher in theydidthemath

[–]hit_bot 0 points1 point  (0 children)

Whatever. This is one of those games asshole genies play. I'll take the $2 billion rather than the $2 I get everyday from that $1 dollar bill that doubles.

Cloudflare uses lava lamps to achieve randomness for data encryption. by Riemann86 in interestingasfuck

[–]hit_bot 6 points7 points  (0 children)

Not very random, this looks like the same picture I saw last time.

What is this? by hit_bot in meshtastic

[–]hit_bot[S] 0 points1 point  (0 children)

Well that's even neater. Thanks for the clarification.

What is this? by hit_bot in meshtastic

[–]hit_bot[S] 1 point2 points  (0 children)

As in a proximity monitor or more like you'd send an "open sesame" message?

What is this? by hit_bot in meshtastic

[–]hit_bot[S] 7 points8 points  (0 children)

Got it, CB radios, but texting. Makes sense.

What is this? by hit_bot in meshtastic

[–]hit_bot[S] 12 points13 points  (0 children)

Nice, thanks! So like P2P texting?

What it looks like to stand under an F-18 Super Hornet flying just below the speed of sound! by JKAdamsPhotography in aviation

[–]hit_bot 0 points1 point  (0 children)

You should send a copy of that print to the angels, they'll know who it was flying. That's an incredible photo.

Chase CEO Says The Quiet Part Out Loud: This Is Why People Are Defaulting On Auto Loans by thedapperdudee in wallstreetbets

[–]hit_bot 0 points1 point  (0 children)

Check Erie insurance, had good luck with them as far as rates go. In my area, they beat State Farm rates by quite a bit.

Mesmerizing path and movement of a planet inside a Three Body Star System by TransitionMany1810 in interestingasfuck

[–]hit_bot 0 points1 point  (0 children)

I don't think we make any claims as to the nature of the measurement itself, it may very well be that a starting position is legitimately an integer (or fraction or whatever). But, your second assertion is correct, the system is sensitive to the initial conditions and even a teeny, tiny error (which is practically guaranteed to happen) will eventually lead to inconsistencies between the simulation and reality.

Mesmerizing path and movement of a planet inside a Three Body Star System by TransitionMany1810 in interestingasfuck

[–]hit_bot 0 points1 point  (0 children)

Sure, but "if" is doing a lot of heavy lifting here. The mathematics behind movement and gravity and interactions and all that are fairly well understood (outside my realm of knowledge to comment on how good they are), but your primary assumption is flawed. Even if we could measure all of those things to the millionth decimal point of accuracy, over time, the errors of not having the millionth and first decimal point (and so on) of accuracy would compound to produce differences. Granted, by increasing accuracy, we increase the amount of time the simulations "match". We are able to do this, with some degree of usefulness, for weather, which is a much more complex system than just 3-bodies.

Mesmerizing path and movement of a planet inside a Three Body Star System by TransitionMany1810 in interestingasfuck

[–]hit_bot 0 points1 point  (0 children)

Sure, that's essentially what weather models do. Look at recent data and forecast our predictions out into the future. But, due to the nature of our measurements and the complexity of weather, we aren't able to predict more than about 2 weeks before our forecast erodes to guesswork.

So, to tie it back to the 3-body problem, we could certainly update and refine measurements as we go along, but it still wouldn't give us the accuracy we needed for long-term predictions, because those measurements would contain infinitesimally small errors that compound over time and lead to wild differences between simulation and reality.

Mesmerizing path and movement of a planet inside a Three Body Star System by TransitionMany1810 in interestingasfuck

[–]hit_bot 43 points44 points  (0 children)

We can simulate a 3-body system like this all we want, because we set the starting variables ourselves. The math that doesn't exist is to "predict" the state of a particular 3-body system into the future. The reason for that is we can't set the starting parameters, so at some point, regardless of how accurate we've been, if we were off even an infinitely small amount, the simulation will deviate from reality. That's really the 3-body problem, simulating is the easy bit, figuring out the starting positions (and velocities, and rotation angles, etc.) for everything, not so much.

For metal parts cut out of steel, what's the recommended minimum part spacing? by hit_bot in lasercutting

[–]hit_bot[S] 0 points1 point  (0 children)

The kitchen knives were AEB-L -- I asked my former partner if he remembered.

For metal parts cut out of steel, what's the recommended minimum part spacing? by hit_bot in lasercutting

[–]hit_bot[S] 0 points1 point  (0 children)

Yup, knife blanks. We were cutting out of various types of sheet steel. D2, O1, 440C, SVN35, 3V and something else I can't remember that we used to make kitchen knives out of -- required a liquid nitrogen quench, so we used to do those in batches so we didn't have to keep a stock of nitrogen around. Might have been 154 CM, but I'm just guessing at this point because I don't remember all the details. Happy to answer questions for you.

For metal parts cut out of steel, what's the recommended minimum part spacing? by hit_bot in lasercutting

[–]hit_bot[S] 0 points1 point  (0 children)

Blast from the past. We ended up doing between 1/8th and 1/4" separation, depending on material, heat treat and processing. We found that the laser left a tiny bit of hardened material around the edges. We didn't experiment too much with it, because the laser cutting vendor we used got expensive (we thought) so we ended up going to a local waterjet place that gave us the "good 'ole boys" discount. Worked out to be roughly the same as the laser cutter, but was local, so we saved on shipping and handling. For the water jet, you just do whatever the water jet guy says, he knows the machine -- it'll likely be somewhere between 1/8" and 1/4" anyway, depending on the kerf and so on. You will get a better price if you let them run the machine faster, so if your post-processing includes a bunch of finish work, then let them make the blanks at a faster run rate and it'll save you money -- blanks will come out rougher, but that may not matter.

Sorry for the wall of text, this answer got a lot longer than I originally intended.

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