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seanc

1,682 karma · joined February 19, 2009

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seanc··on Vertically aligned carbon nanotubes triple the density of lithium batteries
I heard somewhere that in Holland every bicycle + lock weighs 5kg. If you have a cheap 5kg bike no one wants it and you don't have to lock it. If you have an expensive 1.5kg bike you need a lock that weighs 3.5kg to protect it.
seanc··on How long does a freezer stay frozen when the power goes out?
During an extended power outage you can add quite a bit of time by wrapping the freezer in more insulation. Anything will do; fibreglass insulation, quilts, blankets.

You'll be shocked at how cold the inside of the blanket gets.

seanc··on Things I wished more developers knew about databases
"Always code as if the person who ends up maintaining your code is a violent psychopath who knows where you live.

I usually maintain my own code, so the as-if is true. "

http://wiki.c2.com/?CodeForTheMaintainer

seanc··on Why Japan’s rail workers point at things (2017)
This shows up in a few other places as well;

Casino card dealers do all sorts of meaningful gestures

Lifeguards do formal sign language things to each other

Amusement park ride operators

Astronauts and pilots do almost everything out loud in call-and-response

seanc··on Show HN: Discreet dead man's switch for victims of domestic abuse
Yes, very much so. Abusers arrange for various forms of leverage over the people, ranging from emotional to financial, and then children or other dependents make everything that much more complex.
seanc··on America's Biggest Milk Producers Are Going Bankrupt
In the worst case, yes. Most often as a creditor they get something like 20-50% of their pension. Then people often are forced to sell their house. It's devastating to be sure.

And "super basic healthcare" might actually be overstating the case.

seanc··on Bayard: a full-text search and indexing server written in Rust
I assumed the same thing. Quite the co-incidence.

And yes, Bayard Rustin is absolutely one of the great heroes of the 20th Century.

seanc··on A little SSH file copy magic at the command line
rsync most often uses ssh under the hood.

And 'scp -c' will automatically compress and decompress your file, and 'scp -R' will walk a file tree for you.

seanc··on T. Boone Pickens Farewell Letter
Who are you kidding? The way modern bankruptcy works (largely a good thing, btw), no individual is _really_ liable for the company's losses.
seanc··on The New Windows Subsystem for Linux (WSL2) Architecture [video]
I've been using Ubuntu on my primary work laptop for years now, and the only real sticking point is video conferencing. Skype for Business and Webex barely work. Google hangouts is n't bad, but often runs into audio trouble with pulse and alsa.

And the real trouble is that you can't just go find the one that works. If your co-workers all use webex then you're stuck.

seanc··on The Waterfall methodology was a historic accident and they knew it
To my reading, the article suggests that the reason why we have waterfall style development is because some guy at the DoD misread Winston Royce's paper.

"In 1985 the US Departement of Defense wanted a documented process for software development: DOD-STD-2167. Since governments and companies reused these requirements, it radiated across the world from there"

I contend that there are more fundamental reasons for this, so even if this quirk of history had never occurred, we'd still see a lot of waterfall development.

seanc··on The Waterfall methodology was a historic accident and they knew it
I don't know about an accident, necessarily. It's got two important things going for it.

1. It lets everyone involved cover their ass. "All I'm responsible for is my function. There was a problem with my inputs, so no wonder my outputs suck. Don't blame me, my inputs are all right there in black and white, and you signed off on them."

2. It gives people the comforting feeling that they can predict the future, and then do things like plan budgets or negotiate fixed price sales contracts. Predicting the future is irresistible for people who handle money. As fictional as it might be.

So those two things, I think they have a momentum of their own, and without constant vigilance and effort, for most domains, waterfall development is a sad, inevitable default.

seanc··on iPhones are allergic to helium
FOOF!
seanc··on Starting an ISP: Deploying Fiber
If it's anything like the smaller ISP's in my area, his advantages are:

- Vastly superior customer service

- Simpler contracts; straight fee-for-service without any bullshit

- Likely better price overall

seanc··on Feynman's Lost Lecture (ft. 3Blue1Brown) [video]
For those who want to support this work Grant has a patreon page:

https://www.patreon.com/3blue1brown

seanc··on Feynman's Lost Lecture (ft. 3Blue1Brown) [video]
I can certainly say that no one else has made me tear up.
seanc··on Show HN: Transity – Plain Text Accounting
emacs magit is the exception that proves your rule.
seanc··on Glom – Restructured Data for Python
Python regex library does this, optionally
seanc··on Yale physicists find signs of a time crystal
How is one of these different from an ordinary piezoelectric crystal oscillator?
seanc··on Python Environment
No docker containers?
seanc··on My unusual hobby
"Beware of bugs in the above code; I have only proved it correct, not tried it. " - Don Knuth
seanc··on America’s ‘Retail Apocalypse’ Is Really Just Beginning
The irony is that they were originally supposed to provide all of those things:

https://99percentinvisible.org/episode/the-gruen-effect/

seanc··on Two days in an underwater cave running out of oxygen
I am a father and I agree 100%

IMO maaaaybe you could be married with no kids and do this ethically. But with kids? You're rolling the dice on a very important promise.

I do struggle with what that line of thinking means for soldiers though.

seanc··on Teller Reveals His Secrets (2012)
Unless the contestant is an ass about it, in which case they blow the secret wide open. That part's fun too.
seanc··on Teller Reveals His Secrets (2012)
Those guys do come on the show, and very rarely win.

The winners are most often low-profile professional magicians who make a significant income consulting for the famous ones. Inventing and selling tricks is an important revenue stream for many magicians.

So they come on, do some trick that they invented in secret and worked on for years, and give P&T that same childlike sense of awe and amazement that the rest of us experience almost all the time. It's the best part of the show.

Like this guy: https://www.youtube.com/watch?v=LyZp4sPqBAI

seanc··on Buffy the Vampire Slayer at 20
The Twilight Zone?

Looney Tunes?

seanc··on Vancouver Tax on Empty Homes to Target Near-Zero Rental Supply
Apparently many people are cheating on the capital tax:

http://www.theglobeandmail.com/real-estate/vancouver/out-of-...

seanc··on DNA analysis reveals there are four distinct giraffe species, not one
My understanding was that they might be able to crossbreed, but offspring are not fertile, e.g. hybrids such as mules and ligers.
seanc··on You Suck at Excel with Joel Spolsky (2015) [video]
In google spreadsheets I can do something like:

=count(filter(a1:z30>0))

where in Excel I'd have to make an extra column to store the result of the filter, and then count those.

seanc··on MoonMail: Serverless Framework for Sending Emails Using AWS SES and Lambda
Forgive me, but without DKIM, reverse DNS and such, aren't these messages destined straight for the spam folder?
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