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matt_j

297 karma · joined May 15, 2017

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matt_j··on Facebook will reveal who uploaded your contact info for ad targeting
Succinctly? :P
matt_j··on Ask HN: What books changed the way you think about almost everything?
"The Price of Glory: Verdun 1916" by Alistair Horne

Details the battle of Verdun (France v Germany), one of the longest and bloodiest battles of WW1 with around 700000 dead, more than 1 man killed every minute for 10 months. A slaughter of men by machinery. I've read a bunch of books about the great wars and they are all affecting, some of them deeply, but this one showed me in stark relief the mindless brutality and utter futility of war. People talk of wars as necessary, of actions as heroic. It's sad that a civilized species, capable of high reasoning, can still resort to base violence so easily. It wasn't very long ago, and there's been a lot of violence since, some of it on comparable scales. We don't learn much.

matt_j··on Just a few drinks can change how memories are formed
Don't do it.
matt_j··on Rising Waters Are Drowning Amtrak's Northeast Corridor
A lot of business will make a lot of money before climate change affects them, and after, when they pivot to take advantage of a population that all of a sudden needs X (sandbags? boats? water purification?).

Change needs to happen at the government level and be imposed on businesses in spite of what they think. It needs to happen at the alliance level (UN) because governments don't want to act against their economic interests unless they have to, even if their economic foresight is short (a presidential term, maximum).

That they (people with short term economic advantage) have succeeded in making climate change an optional belief is the biggest worry of all. Now we have sheeple (half the general population) blindly running to the precipice while loudly proclaiming anyone that can see it coming as stupid/liar/hands in ears/la la la.

matt_j··on Virgin Galactic successfully reaches space
The ISS? It's above the atmosphere so there is no air resistance to slow it down. The velocity is constant after the initial boost into orbit.

Actually that's not quite correct, I believe it is not quite out of the atmosphere completely and as such there is a (very) small amount of air resistance and they have to fire engines to boost back into the appropriate orbit every once in a while.

matt_j··on The Missing Computer Skills of High School Students
I finished high school in the late 90s and we learned to touch type on mechanical typewriters for 2 years. I'm not the fastest typist in the world, but it sure is a skill I've put to use every day of my life.

Programming is a little different from typing prose, and intellisense helps if you're using an IDE that supports it, but even then, a few characters > tab > a few more characters > tab, it really helps to be able to hit those keys without looking.

If there was one skill I wish I'd learned as a young 'un it's how to use a proper text editor. I was 32 before I used Vim for the first time. I'm getting better at it, slowly, but I wish I'd been exposed when I was younger to give that skill a good decade of exercise.

matt_j··on iPhones are hard to use
I know how to copy/paste on an iPhone and it's still an insufferable operation. I don't know if my fingers are fatter than the average but I find it next to impossible to select anything, or even place the cursor at the end of a word instead of selecting an entire word for that matter.
matt_j··on How Many Objects Can Be Juggled (1997)
Repetition is the key. It's very difficult, at first, to consistently throw a ball in the same way. It's also difficult to do it in the same way with both hands (right to left, left to right). Once you master the simple action of throwing the ball consistently from either hand, throwing 2, and then 3 balls at a time is much easier.

When you can juggle you won't ever look at your hands, you just look at the space in front of your eyes and your hands will be where they need to be.

I can juggle 3 balls quite well, but I can not for the life of me juggle 4 (different pattern) or 5 (same pattern as 3, more balls). 4 is extraordinarily difficult for me. I approach it by separately juggling 2 balls in each hand (no ball swaps hands), but my left hand betrays me!

matt_j··on A 1970s Teenager's Bedroom (1998)
Scrounging is a fine art. I had a room full of electronic gear as a child, a steady stream of computers (286, 386, 486, Pentium, Pentium II, III) and hi-fi components (amp, tuner, tape deck, turntable). My folks were poor, but Dad was a technician and new how to find stuff (garage sale, auction, school/office offloading gear, etc) and give it a quick fix up and a polish.
matt_j··on Stack Overflow Isn’t Very Welcoming – It’s Time for That to Change
There's a delicate balance for moderators to achieve and I don't envy them.

Some questions are clearly daft, the person hasn't done any prior research, the question is vague, the problem is not apparent and it's a big waste of time trying to help. These questions are often shut down mercilessly and I think that's probably the best thing for them, but I've no doubt it's a terrible experience for the guy asking the question. I think the SO blog post addressed it pretty well by outlining a more streamlined question form with clear prompts for each part of the question.

Other questions are not daft, but perhaps are not asked well. They need to be edited, re-framed, boiled down to the essential parts, an example included, the expected output included, that sort of thing. It's tiresome to run into questions like this over and over, and I can understand how people might comment out of frustration, but it's good to prompt the OP to fix their question up so it can (and probably will) be answered well. Kid gloves and kindness are important here, it's not always easy to ask a good question. The SO blog post went a long way to addressing this and I look forward to seeing some changes on the site.

Overall I think SO is a fantastic resource with many amazing contributors, so it's good to see them responding to this problem and I hope they can make it even better.

matt_j··on Let's Learn About Waveforms
Mike Bostock is the creator of d3.js and does, or did, a bunch of visualizations for NY Times. Check his website, it's amazing.

https://bost.ocks.org/mike/

matt_j··on The Long, Slow Decline of BitTorrent (2017)
An $80 packaged game on a shelf probably nets the developer the same profit as a $20 digital version of the same game delivered via Steam. Packaging, distribution and retail markup are a big chunk of the price.
matt_j··on US startups don’t want to go public anymore
I worked at a Blockbuster for a few years right about when video was on the way out and DVD was on the way in.

I don't think we screwed customers. A new release was $5 (AUS) for a night, that's hardly extortion. Almost all of our profit was made on new releases in their first week. The rest of the stock in the shop turned an almost insignificant profit and merely existed to buff the selection a bit and keep people in the store.

Late fees were an annoying issue but a necessary evil when you only have X units of stock and if they aren't returned you can't rent them out again. We were pretty lenient on reducing late fees to sensible amounts but some people were terrible at bringing things back and incurred ridiculous fees.

Physical rentals are a pain. On top of the X units issue, you have to keep them in good rentable condition and customers weren't very obliging on that front either. Digital delivery makes so much more sense now that we have the bandwidth to acommodate it. I can see a small market might still exist, but you can't afford to scale it anymore. Blockbuster was always going to die.

matt_j··on Has music streaming killed the instrumental intro?
If you're prepared to look beyond popular music services, there is a whole world of music out there, of all genres, that is perfectly healthy and doesn't necessarily conform to whatever is in vogue this particular minute.

I haven't listened to a popular radio station in a long, long time, and I don't use any streaming services either. I find music the old fashioned way I guess, but I wouldn't have it any other way. There's no real substitute for getting your hands dirty and digging around for the gems. I found 3 excellent new (to me) bands just this month!

We all have our passions, however, and it takes considerable time and effort to dig. For some, I guess they have other hobbies that consume that time and they're happy to hear whatever comes their way on the radio (or the stream).

matt_j··on Confession as an AI researcher; seeking advice
I liked but didn't love mathematics in high school and as such I just did what I had to do and moved on. A decade later I worked through a CS degree and gravitated towards books about mathematicians and now I have a deep fascination with mathematics and I wish I read these books when I was in high school!
matt_j··on Massive Government Report Says Climate Is Warming and Humans Are the Cause
Throwing your hands in the air because it's 'too hard' is not an acceptable reaction. What is popular is rarely what is good. I'd venture to suggest that what is popular is often vapid, self-serving and short-sighted.

The longest journey starts with a single step. The man who moves a mountain begins by carrying away small stones. Many hands make light work. There is precedent for accomplishing great things by 'just starting and keeping at it until you get there'. Start local. Start small.

Waiting for a 'tech breakthrough' is akin to waiting for 'the rapture'.

matt_j··on The Depression Thing
I struggle with depression. I haven't had any therapy, but taking my bike out to the forest and going for a good long ride in the trees does wonders for me. The adrenaline of a cross country ride and the deep fatigue after a couple of hours on the bike both help me to quiet my overactive mind.
matt_j··on Ask HN: Your thoughts on returning to college to “refresh” a career?
The Coursera recommendation is spot on. MIT Open Courseware would be worth looking into as well. Studying a few mathematics and programming courses would put OP in a much better position to determine the next steps.

I finished a comp sci degree with a major in computational mathematics and I don't feel like I could accomplish very much with my bachelor level skillset in an industrial context. I didn't learn enough mathematics in 1-2 years to be a good applied mathematician.

I wish I did a mathematics degree in hindsight!

matt_j··on Building a fast, secured and free static site in less than three hours
Obligatory xkcd :)

https://xkcd.com/378/

matt_j··on The fertility of the older mind
I concur. I play a fair bit of pool, and I play my best when I've had one drink and I don't think about the shots too much.

If I try to line up every shot perfectly and concentrate on my cue action, I inevitably make a bad shot.

matt_j··on Astronomers have found the stars responsible for an explosion recorded in 1437
Lock 'em up!
matt_j··on Why do many math books have so much detail and so little enlightenment? (2010)
I enjoy math books like:

- e; The story of a number (Eli Moar) - An imaginary tale; The story of -1 (Paul Nahin) - The Poincare Conjecture (Daniel O'Shea) - The man who loved only numbers (Paul Hoffman) - Prime Obsession (John Derbyshire)

They're part biography, part history, and give a little colour to the subject that isn't available from your typical college textbook.

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