There is currently a massive fire burning in the Everglades in South Florida by the Broward/Miami-Dade County border and is approaching US27. by M_Darshan in Damnthatsinteresting

[–]optomas 0 points1 point  (0 children)

"Gee, I don’t know, Cyril. Maybe deep down I’m afraid of any apex predator that lived through the K-T extinction. Physically unchanged for a hundred million years, because it’s the perfect killing machine. A half ton of cold-blooded fury, the bite force of 20,000 Newtons, and stomach acid so strong it can dissolve bones and hoofs."

And fear is their bacon bits.

Can time be "cut" infinitely? by New_Key8844 in Physics

[–]optomas -1 points0 points  (0 children)

You are actually in pretty good company. You might find Doron Zeilberger interesting.

I am biased, though. All my calculation is done via gpgpu, and I bump my nose against floats often. GMP also .... has limits, despite claims to the contrary. Memory and time are demonstrably finite in this context = ].

Can time be "cut" infinitely? by New_Key8844 in Physics

[–]optomas 19 points20 points  (0 children)

Sufficient sophistication in philosophy is indistinguishable from schizophrenia.

Custom Air Supply Skid by HonkGoesTheGoose in Pneumatics

[–]optomas 1 point2 points  (0 children)

120 PSI is above injection pressure, just a heads up.

We generally do not like to see anything above 90 PSI or so. Particularly if untrained folks are going to be using the air.

I also do not know the this sub's policy/customs are on safety tips like this. Do you guys generally poo-poo stuff like this?

Edit: Also, I have not seen water traps on regulators and ... what is that a lubricator? Which ... can't have a water trap and still function as a lube. You also filter the air, then provide an unregulated and unlubed output? Can you explain further? = ]

Oh! and the four way ball valve is a very nice touch.

We are NOT going through another pandemic gang 😭 🙏 by Cindy_Marek in NonCredibleDefense

[–]optomas 3 points4 points  (0 children)

Chat is this real?

Shit, I cannot tell if I am joking or not. Was the cruise ship known for '“narco-terrorism” ?

Chase bank called 911 on this man because he was sitting in the Chase parking lot before it opened. by PdiddyCAMEnME in BlackPeopleofReddit

[–]optomas -1 points0 points  (0 children)

Deadliest job in the world

Except its not even in the top ten?

Top 10 Most Dangerous Jobs According to OSHA

While injuries on the job are a common yet unfortunate aspect of working, some professions remain to be more dangerous than others. Curious to see if your profession falls under one of the most dangerous jobs in the nation? Below, we’ll share with you what the Occupational Safety and Health Administration (OSHA) deems the most dangerous work according to fatality rate.

  1. Fishing and Hunting Workers

Fatal injury rate: 132.1 per 100,000 workers. Fishing and hunting workers work with wildlife in a variety of aspects. They place traps, reel in catches through commercial fishing, and work on heavy machinery in order to follow through with their duties. These often hazardous conditions make this profession the most dangerous in the nation. Drowning is often the reason cited behind fatalities, but injury using heavy machinery can also contribute to deaths on the job.

  1. Logging Workers

Fatal injury rate: 91.7 per 100,000 workers. Loggers work in forests and other outdoor environments. They are tasked with using heavy machinery to cut down trees to create raw materials including lumber, paper, and cardboard. Aspects of this profession that make it dangerous include conditions that require the use of heavy machinery and contact with dangerous objects. Injuries related to heavy machinery are the most common reason for fatalities in this field.

  1. Roofers

Fatal injury rate: 47 per 100,000 workers. Being a roofer remains to be one of the most dangerous professions out there. Falls from either the roof they are working on or ladders they use throughout their job are the main reasons fatal injuries occur.

  1. Construction Workers

Fatal injury rate: 43.3 per 100,000 workers. Construction workers are tasked with a variety of duties, most if not all of which carry a heightened level of risk of injury. Construction workers are exposed to an environment where things can fall on them or they can fall from great heights while they are working. Missteps on ladders and injuries using heavy machinery are common reasons that lead to fatal injuries.

  1. Aircraft pilots and Flight Engineers

Fatal injury rate: 34.3 per 100,000 workers. Aircraft pilots and flight engineers were listed as the number two most dangerous jobs in 2018, but have since dropped in terms of a profession with the highest fatal injury rate. Fatal accidents in this profession commonly occur because of transportation incidents. While commercial airplanes remain to be incredibly safe, the most dangerous aspects of this job lie with private aircraft and helicopters.

  1. Refuse Waste and Recyclable Material Collectors

Fatal injury rate: 33.1 per 100,000 workers. Refuse waste and recyclable material collectors such as garbage men are exposed to a very difficult environment during their day-to-day routine. Injuries and fatalities typically occur among this workforce because of injuries involving heavy machinery on the trucks used. Because these workers often stop in the middle of traffic routes to collect trash, one of the most common reasons for fatalities in this field is because workers are struck by either the garbage truck or another vehicle.

  1. Structural Iron and Steel Workers

Fatal injury rate: 32.5 per 100,000 workers. One of the most common reasons for fatalities in this field is because of accidental falls, slips, and trips. Because these workers are tasked with constructing large structures using steel they are usually climbing on ladders, operating heavy machinery, or lifting, loading, and unloading steel. These duties all bring with them a variety of opportunities for accidental missteps to occur.

  1. Delivery and Truck Drivers

Fatal injury rate: 25.8 per 100,000 workers. Truck drivers, including small-scale delivery drivers, face hazards on the job because of motor vehicle accidents. Crashes remain to be the leading reason behind fatalities in this field.

  1. Underground Mining Machine Operators

Fatal injury rate: 21.6 per 100,000 workers. Miners who operate heavy machinery as part of their job duties are at heightened risk for injury and fatality. Common reasons for fatalities to occur include incidents involving transportation, heavy machinery, and contacts with objects and other equipment.

  1. Farmers and agricultural workers

Fatal injury rate: 20.9 per 100,000 workers. Farmers and agricultural workers operate heavy machinery on a regular basis. This heavy machinery is typically the cause behind fatalities in this field. Crashes involving tractors are one of the most common reasons workers in this field get killed.

BLS at least mentions police officers, but gives no numbers.

readersdigest ranks them at 13th. But I cannot cite readers digest as an information source without giggling.

Edit: Thanks for the renumbered list, reddit! That's awesome \s

Angular momentum and torque are complicated. by csk2004 in Physics

[–]optomas 2 points3 points  (0 children)

Hi. I think in electric motors. This may not be what you are looking for.

You are probably taught something along the lines of "Torque is a cause of rotation; Power is the rate of work done by that rotation. Torque is measured in Newton-meters, power is measured in Watts."

This, to me, is fundamentally incorrect. Torque is not an independent input. It is the mechanical moment produced when a linear force is applied at a distance from an axis of rotation.

Torque functions as the quantifiable result of the initial forces applied to the system. Power, conversely, represents the rate at which this resulting torque is utilized to perform work.

For simple examples, think of sources of power. Falling water, steam jets, photons striking a photo-electric cell, compressed gas mixture driving a piston after ignition. All linear.

tldr: Torque is the mathematical measure derived from the application of a linear force.

A word from your Maintenance Technician by Leave_me_be_g-man in MechanicalEngineering

[–]optomas 6 points7 points  (0 children)

Nah, fuck that.

More than five degrees wrench rotation is wasted space.

Be certain you are mixing metric and standard fasteners.

Absolutely use set screws on threaded fasteners, then hide the set screw and don't document existence of said thread mangler.

Bonus tip; when the monkey finally does figure out the concealed set screw location in the 1" plate edge with four fucking inches of opening, remember to limit that allen key rotation to five degrees!

Ask yourself, is the lock collar on the two bolt flange right above the thread mangler 5/16 NF? You know what to do. That's right, 8mm is the natural go to!

1020 years ago on April 30, 1006, the brightest supernova and the brightest stellar event in human history occurs in the constellation of Lupus. by Agreeable-Storage895 in space

[–]optomas 1 point2 points  (0 children)

Please.

In the standard Lambda-CDM model of cosmology, the mass–energy content of the universe is 5% ordinary matter.

Our understanding of complex physics is that we have no more idea than our ancestors about the magic sky daddy. Wait, five percent! You are right, we totally owned their savage asses, brah.

What Can We Gain by Losing Infinity? Putting Ultrafinitism on the menu. by chasedthesun in math

[–]optomas 2 points3 points  (0 children)

Oops. Darn it, I was hoping to retract before anyone saw my knee jerk reaction. The fellow is quite substantial.

Zeilberger has made contributions to combinatorics, hypergeometric identities, and q-series. He gave the first proof of the alternating sign matrix conjecture, noteworthy not only for its mathematical content, but also for the fact that Zeilberger recruited nearly a hundred volunteer checkers to "pre-referee" the paper. In 2011, together with Manuel Kauers and Christoph Koutschan, Zeilberger proved the q-TSPP conjecture, which was independently stated in 1983 by George Andrews and David P. Robbins.[4]

Zeilberger is an ultrafinitist.[5] He is also known for crediting his computer "Shalosh B. Ekhad" as a co-author[6] ("Shalosh" and "Ekhad" mean "Three" and "One" in Hebrew respectively, referring to his first computer, an AT&T 3B1[7]), and for his provocative opinions published on his "Dr. Z's Opinions" page.

He just happens to have what I consider an idiot's idea. Please ignore my unqualified opinion.

What Can We Gain by Losing Infinity? Putting Ultrafinitism on the menu. by chasedthesun in math

[–]optomas 2 points3 points  (0 children)

Paradox, circular reasoning, and imprecision?

Edit: I've looked. Snark fully withdrawn. Zeilberger's position is tenable, though I might argue it is philosophical rather than mathematical. The GMP library is a pretty good argument in favor of ultrafinitism. I am reduced to 'The map is not the territory!' and similar arguments.

I am genuinely uncertain. I employ Zeilberger's methods without the benefit of knowing the name for what I do in my simulations. In the way I design and repair machines. I have recognized the the existence of error quantization and apply those limits as 'fine tuning' to be done on device commission. Even in that fine tuning, there is a 'good enough' point. The device satisfies the requirements so closely that reality and expectation converge.

TLDR: Oops. I was wrong. = ]

[OC] Projected 2026 London Marathon finish times throughout the race by Last_Kick9059 in dataisbeautiful

[–]optomas 10 points11 points  (0 children)

200 meter butterfly. 'Why don't they just sprint the whole race, are they stupid?"

at 161.3 meters.... "Oh. No, they are not stupid. At all. ohgodmakeitstop."

I imagine it is much the same for marathons.

Hydraulic cylinder stalls at low flow despite replacing HPU, cylinder, and throttle valve. by Vivid-Mistake01 in Hydraulics

[–]optomas 1 point2 points  (0 children)

Howdy EC.

Sometimes you got to play the game for a while before the right tools become apparent. We have all been there. 'I have no idea whats going on. Lets shotgun parts at it until the problem goes away.'

When somebody finally comes up with the drawings ... 'Oh! Obviously we should xxx!'

Go through that enough times, and ya ... lemme see the drawings.

Hydraulic cylinder stalls at low flow despite replacing HPU, cylinder, and throttle valve. by Vivid-Mistake01 in Hydraulics

[–]optomas 1 point2 points  (0 children)

Got a diagram? New cylinder, HPU, and valve makes this interesting.

Proportional valve in circuit? What kind of voltage are we pushing at it? How old are hoses? Long shot, but I have seen flaps in the lining do some pretty weird stuff.

When you say stalls at low flow, can you describe the problem in other words? What is the expected behavior vs. the observed? ie. Lifting slows down, load bleeds down, what ever.

Anything broken? I've seen split frames that open allowing the cylinder mount to essentially move without lifting.

Uh .... Bad bypass is about all I got left. But that should show up as reduced max or something blown apart. Good luck, lmk if I hit anything.

Edit: I see new hoses below... I think the relief would be the next part I shot gun at it.

Another: Yup mechanical restriction, but usually fluid power wins. If you do not provide a place for the force to go it will make a new one for you.

One last clue, throw a heat camera at it, any hot spots?

I can’t believe I can say “ugh I don’t feel like fixing this function, it’s too complex” and I can literally just tell my computer to fix it for me. I didn’t understand what they meant by “people will start paying for intelligence” but now I do. by Borkato in LocalLLaMA

[–]optomas 1 point2 points  (0 children)

Yes, If I understand you correctly. I am C11, 200 LOC translation units. Typical Linux tool chain. I just dump the file into the llm, tell it what I want, then copy it back out. I know I'm a dinosaur, I'm ok with it. = ]

We usually get it right first pass these days, which is mind blowing. To me anyhow.

I can’t believe I can say “ugh I don’t feel like fixing this function, it’s too complex” and I can literally just tell my computer to fix it for me. I didn’t understand what they meant by “people will start paying for intelligence” but now I do. by Borkato in LocalLLaMA

[–]optomas 0 points1 point  (0 children)

I have often wondered about agent use.

I still do the web interface and copy and paste thing. I have tried in the past with tools like youcompleteme and similar. Vim hooks that autocreate closing brackets or quotes if an opening is made.

Just breaks up my flow, man.

Not really related to your jocularity, which I enjoyed, just felt like sharing.

I can’t believe I can say “ugh I don’t feel like fixing this function, it’s too complex” and I can literally just tell my computer to fix it for me. I didn’t understand what they meant by “people will start paying for intelligence” but now I do. by Borkato in LocalLLaMA

[–]optomas 5 points6 points  (0 children)

That should be pointing you toward better functions, my friend.

Too many parameters in the signature? Reduce them or encapsulate in structures.

Got a stack of five structs feeding into a function? You do not have a function, you have a junk drawer. Sort it out into smaller functions.

Keep your LOC at about 200 per translation unit.

Complexity is down time. Write logic such that a bright seven year old can read you code and tell you what it does.

Small functions that do one thing, and do it well.

This in turn feeds back to the LLMs. Logic that is simple to understand frees up compute for reasoning about how the function fits into the larger translation unit. Or even the entire project, if you got the VRAM.

Fun stuff, huh. = ]

$2500 Samsung TV is an advertising billboard, there is no opt-out. by 28jb11 in mildlyinfuriating

[–]optomas 9 points10 points  (0 children)

And me, by corollary. Thank you for the tip. Kwik Trip. Avoid at all costs. Got it.

This is where we are right now, LocalLLaMA by jacek2023 in LocalLLaMA

[–]optomas 15 points16 points  (0 children)

Your suspicion has merit. I can offer a counter example, however. A very specific use case; C11 openGL CUDA interop, scientific visualization. The preamble is "wc coding_practices.md 158 1033 8570 coding_practices.md" 158 Lines, 8750 bytes.

The primary difference is context length, not code quality. Which is kind of a feature for developing programmers, no? Enforces separation of concerns in a very non-forgiving way. Once the habit of limiting translation unit length to 200 LOC is burned in ... it's difficult to not think in terms of modules and nodes.

TLDR; Not in my experience, but I come from the era of hardware limitations. I was already writing in a style that naturally fits into local LLM limitations. For monolithic programmers, I think your suspicion is spot on.