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wheelinsupial

345 karma · joined April 7, 2021

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wheelinsupial··on Ask HN: I hate gym. How to stay in shape?
In my anecdata, it depends on what your goal is.

I think doing some reps spread throughout the day is a good way to increase the max number of reps you can do in bodyweight exercises. Some communities call this method "greasing the groove."

For me, I could get up to doing 20 pull-ups in a row (without kipping) if I did sets throughout the day. But I wasn't gaining any muscle, so I definitely didn't look like I could do 20 pull-ups. My brother trains by going to the gym and doing all sets at the gym. He definitely looks like he can do 20 pull-ups.

So, if your goal is to improve your max number of reps in some exercise, then yes, I think it's a good approach. If your goal is to build muscle, I don't think it's an optimal approach.

wheelinsupial··on Path to a free, self-taught education in Computer Science
"PEO considers non-licensed use of “Software Engineer” to be a violation of our Act."

https://www.peo.on.ca/public-protection/complaints-and-illeg...

wheelinsupial··on St. John’s Reading List: A Great Books Curriculum
You're right it is a big part of advanced math, but you can cover calculus, linear algebra, and proofs in parallel! If you have enough time.
wheelinsupial··on St. John’s Reading List: A Great Books Curriculum
You can take four terms of calculus using the Stewart book and not need to do any proofs. You do need to review algebra and have a good grounding in that, though.

You can also cover linear algebra without proofs.

There are, of course, books that do cover proofs for calculus and linear algebra, but it depends on what you’re trying to get out of the material.

wheelinsupial··on St. John’s Reading List: A Great Books Curriculum
Are you looking for a book to learn proofs from? Are you looking to learn any math topics in particular?

I think you can go through any of the books you listed and get an understanding of proofs. The proofs books usually use basic number theory or set theory for examples because the point is to learn the logic and structure of proofs. (If the book isn't enough for you, you can use Khan Academy as a refresher.) Learning more math is left to other books.

I looked through the table of contents for the ones you've linked, but neither looks like an upper year math book. Typically, if there is an explicit course on proofs, it's covered in the lower division.

The proofs course I took used "Mathematical Proofs: A Transition to Advanced Mathematics" by Chartrand, Polimeni, and Zhang. It's ridiculously expensive on Amazon right now, so I'm not sure I can recommend it for the cost. But it does cover more areas of math using proofs. It covers proofs in set theory, number theory, combinatorics, calculus, and group theory at a very basic level. The books you linked seem to cover less of those topics, so I think Chartrand et al. is a more gentle intro to different branches of upper division math.

wheelinsupial··on Ask HN: Looking for advice on my situation at work?
This isn't a uniquely Francophone issue in Canada. I'm in Metro Vancouver and every immigrant ethnic group does this same thing. My manager had to pull someone off of our hiring panel because he literally said "I need to support people from my village in India to help them get a better life. I'm only going to support hiring them."

People hire from their own network. If you were educated outside of Canada or have religious groups or other common cultural groups, then you'll tap into that network to hire. I've worked at companies with less than 100 people to companies with more than 10,000 people and team composition tends towards the manager's background.

wheelinsupial··on Netflix's New Chapter
I think the book Blitzscaling is by Reid Hoffman, founder of LinkedIn. Reed Hastings wrote No Rules Rules https://www.norulesrules.com/
wheelinsupial··on Ask HN: Math books that made you significantly better at math?
I would add understanding the reasons for definitions, how they fit together with theorems, lemmas, corollaries, proofs, and some basics of the format of proofs. You can find good explanations through Google.

For more applied or computational branches of math, I'd also add how to check your answers by using numerical methods or a computer algebra system if possible.

wheelinsupial··on Ask HN: What are some of your “buy it for life” purchases?
Have you replaced the mechanical pencil over the years or is that still your original one?
wheelinsupial··on FAA says computer failure was caused by contractors who introduced data errors
If manual entries are critical to a system, you can have one person enter the info and someone else to confirm the entry is correct. Not sure how common this is in other industries, but this was the method used at an extrusion manufacturing plant I once worked at.
wheelinsupial··on Tim Cook to take 50% pay hit after shareholder feedback
Possibly Andrew Carnegie.
wheelinsupial··on Alphabet unit Verily to trim more than 200 jobs
This sort of already exists in Vancouver, BC, Canada. There is more to it than just salary, but there is a huge gap at the neighborhood level.

“ But zoom in to the neighbourhood level — what Statistics Canada calls “census tracts” — and you’ll see that life expectancy can vary by as much as 30 years.

The area with the lowest life expectancy is the Downtown Eastside, where the average resident is expected to live 60.2 years.

The area with the highest life expectancy is the University Endowment Lands, where the average resident is expected to live 90.4 years.”

https://thetyee.ca/News/2022/01/17/Life-Expectancy-Gap-30-Ye...

wheelinsupial··on Flexport slashes 20% of global workforce over weak 2023 volume forecast
"A single-threaded leader is a leader who is 100% dedicated and accountable to a specific product, such as your mobile application, customer account, or the search capability in your e-commerce store. The single-threaded leader is responsible for turning strategy into real results, and they are empowered to do so."

https://aws.amazon.com/blogs/enterprise-strategy/two-pizza-t...

wheelinsupial··on The California roll was invented by a Japanese-Canadian chef (2020)
There is a B.C. roll that is also claimed to be invented by Tojo: https://en.m.wikipedia.org/wiki/B.C._roll
wheelinsupial··on Ask HN: How do you stay productive after work hours?
Did you happen to be a product manager? I've heard / read 60 hours quoted in a couple of places.
wheelinsupial··on I became a software engineer after 5 years in data science
Software engineering is a branch of engineering in many countries. Engineering follows the engineering design process [1] and uses applied science. So, to me, people doing software engineering (regardless of laws / licenses) are following an approximation of the engineering design process. A software developer is anyone getting paid to write or produce software regardless of approach or knowledge of CS topics.

On a spectrum, there are software developers that follow the engineering design process and use all sorts of knowledge of applied science, but there are also those who make it all up as they go along and rediscover or rename concepts independently. Each approach comes with its own associated benefits and tradeoffs, and there are times and places where the latter end of the spectrum can be desirable.

At least that's my hot take.

[1] https://www.mcgill.ca/engineeringdesign/step-step-design-pro...

wheelinsupial··on I became a software engineer after 5 years in data science
I think I'm missing something, but why is an opinion piece needed on this issue? Software engineering is a licensed engineering profession in many places. It used to be possible to be licensed as a software engineering in the United States [1, 2](little demand caused the licensing exams to be discontinued, possibly because regulation wasn't enforced, according to [2]). So, I think it's fair to say enough of the engineering profession has spoken to say software is a branch of engineering.

What I think are the relevant extracts from the article:

> “Do you consider software engineering actually engineering?”

> Of the 17 crossovers I talked to, 15 said yes.

> That said, many of the crossovers [3] also added an additional qualification: software engineering is real engineering, but a lot of people who write software aren’t doing software engineering. This is not a problem with them, rather a problem with our field: we don’t have a rich enough vocabulary to talk about what these developers do.

The engineering field has developed a vocabulary for different professionals in the field. Why can't this be applied to the software field since it is a form of engineering? There are engineers, technologists, technicians, and trades (at least where I am). The issue is there are education and work experience requirements that lead to licensing, which people will say are inequitable and gatekeeping [4]. From 2, there was an experience-only path available to get software engineering licensure, so if the field really wants it, there seems to be precedent to allow for alternative routes into those titles.

[1] https://ncees.org/engineering/pe/software/

[2] https://www.nspe.org/resources/pe-magazine/may-2018/ncees-en...

[3] The definition of "crossovers:" "people who used to be professional engineers and then became professional software developers. I call these people crossovers, hybrids between the two worlds."

[4] I'm sympathetic to these concerns. I studied engineering technology and worked as a technologist at the beginning of my career. I wanted to become a mechanical engineer, but I couldn't afford to return to school full time to complete the remaining 2 years for the BEng. (My school offered a 2 year diploma for engineering technologists, which led directly to years 3 and 4 year of the BEng.) When I wanted to complete the degree, a full time course load was required (7 courses per term at my school) for the engineering program to maintain accreditation.

wheelinsupial··on Meta’s behavioral ads will finally face GDPR privacy reckoning in January
> - Discord. A little over half said they use it routinely. I should have asked more about this.

People have been using Discord to host chats for student societies, classes, to complete group work, and other school related messaging threads (seems to replace school subreddits).

There are some school provided class chat boards from things like Blackboard, but those are monitored by the instructors and TAs. The discussions tend to be more open and frank in Discord.

wheelinsupial··on A homework question in someone’s 11th grade statistics class
> I'm not an expert either in statistics or in polling

Fortunately for us, the author is :)

The author has an outline available for a course on survey sampling for those interested in references and topics to learn more. http://www.stat.columbia.edu/~gelman/surveys.course/surveys_...

wheelinsupial··on When McKinsey comes to town
Sorry, I should have been more clear. The acronym is MBB (McKinsey, Bain, and BCG) that I'm familiar with when referring to the top consulting companies. MBBD (McKinsey, Bain, BCG, and Deloitte) is a reddit joke that I've seen a bunch. The original commenter was using McKinsey, Bain, BCG, and Accenture to refer to the "big 4" consulting firms. I've worked with Accenture before, but I've never heard anyone group Accenture with those other consulting firms.
wheelinsupial··on When McKinsey comes to town
In my experience, Accenture is the big body shop. I've worked at companies that outsource tech strategy, new system requirements / scoping, delivery and development, and post deployment support and maintenance 100% to Accenture.

There are regional hubs they have (I've worked with Philippines and India and heard of Eastern Europe) for the support and maintenance.

There are some back office financial shared services (e.g., AP / AR / cutting POs) that they also support. I wouldn't be surprised if there was more.

Accenture can give you everything from the PowerPoint slides up to the people that will be seconded or placed in your organization as contingent workers / contractors.

wheelinsupial··on When McKinsey comes to town
Accenture is a new one to me. I've seen MBBD(eloitte) used a fair bit, but figured it was just a reddit meme.
wheelinsupial··on Amazon layoffs now expected to mount to 20k, including top managers
No Work Email? Sign up with a personal email address and get read-only access to limited content.

https://us.teamblind.com/logic

wheelinsupial··on Cognitive ability is a powerful predictor of political tolerance
> how many of us paid even the minimum of 12 USD for 48-hour access to the complete study and know what they even mean by the title?

I know not everyone on HN has a degree or access to college / university, but for those that do, don't you have alumni library access privileges?

wheelinsupial··on Cognitive ability is a powerful predictor of political tolerance
What do they say about Mechanical Turk? Is it that it's more representative of non-American point of view?
wheelinsupial··on BloomTech, previously Lambda School, cuts half of staff
> many college-level books are free on the internet in PDF form

As are many of the college-level lecture notes, assignments, and answer keys.

wheelinsupial··on Goodbye, data science
They mentioned engineering programs in their comment.

40 hours isn't normal even for engineering programs. Every engineering program I've looked at has higher course hour and credits required. Obviously I haven't looked at every single engineering program at every engineering school, so there probably exists some counter example showing it's no different than arts or science..

Where I studied, we had one semester with 40.5 hours of lecture, lab, and tutorials. One other semester was around 38 or 39 hours. The rest were in the mid-twenties for lecture, lab, tutorial. My program wasn't the typical engineering program, but all of the other engineering schools where I went (Western Canada) did require more credits and more class hours than science and arts and business programs. There may have been some exceptions with honors programs (meaning they have to take 132 credits vs 120 credits and write a thesis) in arts and science that put them closer to engineering programs, but these have limited enrollment.

wheelinsupial··on Goodbye, data science
> the higher up I climbed the more I realized the job had marginal business impact

Do you have any observations why? I'm a pretty lowly business analyst, but my observation is if you don't own the decision making (usually by having profit and loss responsibility), you can't have much impact. Possibly it's the companies and industries I've worked at, but at the end of the day if the results don't meet expectations, it's the business owner that gets fired and not the people providing the recommendations.

wheelinsupial··on Why is the state of mathematics education so abstract and uninspiring?
If you're reading a math or other computational or textbook, I'd also suggest to read through the exercises in the back of the chapter before diving in. It primes you with keywords from the questions and helps you to think of how you can use what you've just read.
wheelinsupial··on Bob Iger back as Disney CEO
Unfortunately this one seems polarizing. I loved it from the first scene, but there seem to be more than a few people who find it slow and boring to start, and don't come around to it.
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