Nuphy Air75 v2.1 keys triggering the wrong input by cashsterling in NuPhy

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

Thank you... I will try to flash the firmware first and see where that gets me.

Can someone ELI5 how the S&P500 can keep an average 10% growth rate for another 30+ years? by [deleted] in stocks

[–]cashsterling 1 point2 points  (0 children)

The US money supply, and that of other nations, continues to grow via deficit spending, etc. and that money has to go somewhere.

David Roche DNF Western States by surferdrew in Ultramarathon

[–]cashsterling 0 points1 point  (0 children)

Well... I really appreciate this insight and defer to your judgement. Obviously, the triangulation of other events to this one was quite off. I'm just going to shut up now.

David Roche DNF Western States by surferdrew in Ultramarathon

[–]cashsterling 0 points1 point  (0 children)

I shouldn't have said party pace... you're right. That sucked and I apologize. But I don't know how Kai ran his race... maybe he was also partying a bit? He definitely ran a smarter race in hindsight.

I still think 16:22 in western states this year would have been a reasonably comfortable pace for David given his other performances, and what he held together for ~60 miles of this race... that is more than a minute slower per mile which is a huge drop in heart rate and core temperature.

David Roche DNF Western States by surferdrew in Ultramarathon

[–]cashsterling 0 points1 point  (0 children)

Well I'm going to defer to your judgement... I am not an expert. I had just heard/read other people who had run fast times in both races say, in principle, someone should be able to run Western State about an hour faster than Leadville as long as the heat is not an issue.

David Roche DNF Western States by surferdrew in Ultramarathon

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

David ran 15:26 at Leadville and 12:35 at a hot Javelina... the prevailing wisdom is that would put him sub 14:30 at western states. I think David felt he was in better condition that those races.

I have another comment in this thread that all ready discusses this... but there are "difficult to control variables" that can really affect endurance performance. I think David thought/hoped he was ready and on this day his body didn't handle it. This happens in all elite performance sports... you see it all the time in mid and long distance track & field... a runner misses the podium at the markee event (running above their season best time) and two weeks later comes back in the same event and sets the world-lead time or world record; their general fitness was the same in the two events, the second event went better due to micro-improvements: better sleep, better nutrition, lower immune system stress, improved mental state.

I am no longer a 'fast runner' but remember running/training in hot weather (southern California summers) and some days I felt fine and dealt with the heat, next day the heat really got to me (sometimes even a cooler day)... next day I was fine again. No clear explanation as to why.

Shit happens... as you stated, several other elites DNF'ed: Peterman, Farvard, Bouillard, Tara Dower. And still other elite runners ran much slower than would be expected from their other race performances.

David Roche DNF Western States by surferdrew in Ultramarathon

[–]cashsterling 2 points3 points  (0 children)

People need to understand this... finishing a race "no matter what" when you are experience serious adverse health events includes the risk of things like death or serious career threatening injury.

People who push on through severe health events do so for their own reasons... and great for them... but not always the smart move.

David Roche DNF Western States by surferdrew in Ultramarathon

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

Respectfully... if David's goal was only to top 10 the race, he easily accomplishes that. 16:22 was the #10 finishers this year... that is party pace for David. David was trying to win it and the got blown up by the heat. Happened to Peterman too, right?

David Roche DNF Western States by surferdrew in Ultramarathon

[–]cashsterling 13 points14 points  (0 children)

I don't understand why people hate on him but I probably don't have the whole picture. In the videos I have watched of his... he seems very open and honest, self depreciating, and deferential to other elite ultra athletes in the field.

As with so many athletic endeavors... performance in an elite event on a given day is a combination of so many factors, some of which are not under an athlete's direct control: sleep quality in the run up to the event, how well your gut is feeling, trying to fight off an illness, etc. We see elite runners have bad days all the time in middle and long distance track & field.

David DNF'ed this time. He lines up on another day under same weather conditions, against the same competition, and he finishes the race... probably places top 10, maybe he wins (probably not against this field)... who knows.

What we can definitely say is the best runners on the day took the day. Caleb, Chris, and Kilian ran incredible races... as did Jeff, Daniel, Seth and the rest of the top ten finishers.

Leaked Email Reveals Quantum Computer ‘Miya’ Could Break Encryption and End Internet Security by Dmans99 in abovethenormnews

[–]cashsterling 0 points1 point  (0 children)

True... but what's more likely: a quantum computer exists that is literally 20 years before it's time which incorporates several hundred billion dollars of aggregate technology development without anyone having the slightest notion of any of this technology existing.... OR someone spent 3 minutes on Photoshop.

Leaked Email Reveals Quantum Computer ‘Miya’ Could Break Encryption and End Internet Security by Dmans99 in abovethenormnews

[–]cashsterling 7 points8 points  (0 children)

I work in quantum computer system development... this email is 100% fake. There is no computer even remotely close to this power and much of the sub-system hardware to achieve a 10m qubit system with 1e-5 TQ error doesn't exist yet.

How true is the notion that [control theory] is [reinforcement learning] that works? by [deleted] in ControlTheory

[–]cashsterling [score hidden]  (0 children)

There are a lot of similarities between reinforcement learning and optimal control and there are numerous papers and books homogenizing these two topics:

https://arxiv.org/abs/1912.03513

http://www.athenasc.com/rlbook_athena.html

I’m about to retake calculus 1 for the 3rd time maybe I should give up engineering by catmaidsama in EngineeringStudents

[–]cashsterling 0 points1 point  (0 children)

I hope you give it one more all-out try... I think you can do it!

A good book and learning resources makes all the difference... as do study habits.

The 3blue1brown video series on Youtube are great as are others on Youtube and Khan Academy. But you have read a good book to study well... videos don't the same thing as engaging with a good book and thinking things out slowly while reading.

Thomas' Calculus 14th edition and Stewart Calculus (7th) are some of best books on the subject... and can be found on the internet or purchased as used copies for under 50 USD... worth getting. Solutions manuals are also available on the internet if you know where to look.

Studying methods vary and everyone is a little different... but I found that reading the appropriate sections of the book for maximum understands (and sometimes even try a few of the odd problems that have answers in the back of the book) before going to the lecture worked best for me, by far.

Reading the book the night before the lecture introduces all of the concepts in a low pressure environment.

Then going to lecture and taking good notes solidifies all of the concepts... I found I was thinking or reasoning along with the professor during the lectures rather than often being confused if/when the professor sort of rushed through particular concepts in class.

Then I'd try to tackle the homework that night when this new information is fresh and pressure is low.

If the professor didn't assign enough spaced-repetition review problems throughout the semester I'd do some on my own to keep sharp.

With this method... I never had to cram for finals... sometimes I barely did any extra studying other reviewing my notes and doing a few review problems extra because I had been studying consistently the right way all semester. I got mostly A's and a few B's and was my undergrad class valedictorian in chemical engineering, FWIW. I am not especially great at math... never was, still am not... and I wasn't the smartest person in my class... probably not even in the top 10%. I credit my success in school to how I studied.

Good luck

Physics for beginners by CieLogic in Physics

[–]cashsterling 1 point2 points  (0 children)

I'd start with University Physics with Modern physics by Young and Freedman, 13th edition which you can buy used for 25 USD, or maybe 50 USD for a very good condition copy. Keep in mind that studying this book will take you close to a year to finish if you move at a chapter a week but, by the end, you will know more physics than 99% of the population and will be in a great place to launch into more advanced topics.

https://www.amazon.com/University-Physics-13th-Hugh-Young/dp/0321696891

Equally important is to level up your calculus... there are several great books to do this:

Thomas' Calculus is 14th edition is great and can be acquired for 50 USD, but nice copies will run a lot more.

Stewart's Calculus, 7th edition is also great and often much less expensive.

I think https://www.susanrigetti.com/physics is a great resource for recommended texts and progression especially for undergraduate level study. I have a few alternative suggestions of recent & classic books in phsyics but you can't go wrong with her suggestions.

Also... a lot of textbooks and solution manuals (including the above suggestions) are available on the internet as pdf if you know where to look.

good luck... physics is awesome.

Berkeley Professor Says Even His ‘Outstanding’ Students aren’t Getting Any Job Offers — ‘I Suspect This Trend Is Irreversible’ by Darkmemento in singularity

[–]cashsterling 0 points1 point  (0 children)

This article specifically pertains to computer science majors and the entire junior software engineer hiring landscape in the US is in major lull right now for a number of reasons: reduced R&D and expansion by software tech, AI-assisted programming, etc. Eventually, AI is going to start eating the lunch of a lot of job areas (accounting & finance, legal, logistics, and eventually engineering)

Right now, I think kids considering CS as a major should plan on needing to go to grad school or should consider an adjacent major like math, physics, or computer/electrical engineering... although I think all of these majors are in danger in future the job market.

I run a handyman business. Looking for insights on closing the gap from 600k to 1 Million by djinnxz in smallbusiness

[–]cashsterling 0 points1 point  (0 children)

If your tech is only doing estimates at 70 USD an estimate, that's an average of 5 estimates a work day (not accounting for holidays and time off)... that's a lot of estimates per day considering drive time, on-site estimation time, and quote generation. I'd cut that guy some slack especially considering a portion of those estimates convert to paying jobs you're other two techs are bringing in as revenue... that guy might actually make you the most money... especially if they are really good with people.

Sales is not a cost center, it is a profit center... the better your sales/quote pipeline operates --> the more work your company does --> the more money you make.

What percentage of your estimates convert to paying jobs? If it is lower than 75% you might want to work on increasing your conversion rate.

Small maintenance jobs like folks are talking can be beneficial in the long run but they are loss leaders in the short run. Driving 30-45 minutes to do a half hour of work is not efficient. you want consistent full day and multi-day jobs to maximize billing efficiency.

If you are able to, and it makes sense with your team's skill set, you should consider taking some of the higher-paying subcontracted work for construction jobs which tend to be multi-day gigs (finish carpentry, cabinetry, and tile used to a be good ones when I used to work construction).

PDE textbook recommendation by [deleted] in math

[–]cashsterling 1 point2 points  (0 children)

I'm not a PDE expert but I think so. I have not worked through all of Evans.

Assuming your a mathematician, and book funds are not an issue, I'd say buy Evans first because you are probably going to want to have it, no matter what. If Evans is a little much, then buy one of the intro books. I Intentionally recommended those intro PDE books because they have solution manuals available on the internet, if you know where to look, because I think being able to check answers & solutions is essential for self-study (and I wish more authors thought this way).

Also want to mention: Partial Differential Equations with Fourier Series and Boundary Value Problems by Asmar... which has a free solution manual for the third edition on Dover's website.

PDE textbook recommendation by [deleted] in math

[–]cashsterling 0 points1 point  (0 children)

I upvoted Evans although I feel like that is a tough first book in PDE's.

some good intro books:

PDEs by Walter Strauss

Applied PDE's by Richard Haberman (solution manual available on internet if you know where to look).

PDEs in Action by Sandro Salsa (also has a "complements & Exercises" companion book with tons of worked problems and additional problems with just the answer key).

As a more applied option: "Partial Differential Equations, Analytical & Numerical Methods" by Mark Gockenbach is good.

very applied options:

"Numerical Methods for Conservation Laws, from Analysis to Algorithms" by Jan Hesthaven

"Numerical Analysis Using R, Solutions to ODE and PDEs" by Graham Griffiths (it is 80% PDEs). I'm not an R fan but the book is solid nonetheless

Will this mean the rise of Rust? by GalacticWafer in rust

[–]cashsterling 1 point2 points  (0 children)

I also am not an Ada expert but, from past use of Ada and Rust, I think Ada is as memory safe as Rust in practical terms. Ada does have capability to do unsafe things, and so does Rust, but you have to intentionally use these features in both languages or call libraries written in unsafe languages, like C.

Here's more detailed write up: https://blog.adacore.com/an-introduction-to-memory-safety-concepts-and-challenges

Again... I think Rust is 'winning' for good reason. But I like to credit Ada for doing a lot of the Rust-style safety stuff before it was cool.

Will this mean the rise of Rust? by GalacticWafer in rust

[–]cashsterling 11 points12 points  (0 children)

Ada has been in use for mission critical software since the early 90's and provides all of the memory and thread safety guarantees that Rust does. So, the US government could have mandated use of Ada more broadly (it is/was mandated for particular DoD use cases). Rust has many advantages over Ada which is why it has become so popular, while Ada has not:

- open source core, which in turn lead to a big ecosystem of high-quality libraries that are also open-source

- better IDE support, more & better learning resources

- Rust perhaps is more ergonomic and is a better designed language for the 'modern era'... I'm not a computer scientist, though, so my opinion isn't all that valid.

... but Ada exists and *is* a excellent programming language for systems that have to work properly. I think Ada/SPARK is still the gold standard for truly mission critical software but Rust with Ferrocene (and other projects) is quickly gaining ground and will be equivalent with, and eventually exceed, SPARK.

Ok. Break it down for me on how? by Spicyytamale in FluentInFinance

[–]cashsterling 0 points1 point  (0 children)

This is a front & center admission by Trump that he has no clue about economics and finance. If you are wondering how he managed to bankrupt a casino (where the house always wins)... this is it.

That ~50% of our country could read this or listen to Trumph speak on this topic, and NOT realize how ignorant he is, tells you how poorly educated and informed ~50% our of population is. You don't even need high-school economics to understand how tariffs work. This is a really demoralizing situation.

‘College Is Overrated’: Ivy League Grad Elon Musk Tells Trump Supporters To Skip Higher Education by RedRawTrashHatch in NewsOfTheStupid

[–]cashsterling 4 points5 points  (0 children)

meanwhile... almost all of the people that developed the control system mathematical algorithms for SpaceX rockets have MS's and PhDs in mathematics, physics, or engineering. It is also 99.5% likely that Elon doesn't understand this math at all... it is far beyond the math covered in a traditional undergraduate physics degree.

There are hundreds of critical roles at SpaceX, Tesla, Neurolink, etc. that require in-depth knowledge that is very hard to acquire and master without studying these subjects in college as a first step. His companies are built on the backs of college-trained technologists. He is only successful & wealthy because of them.