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tehwalrus commented on The Downside to Life in a Supertall Tower: Leaks, Creaks, Breaks   nytimes.com/2021/02/03/re... · Posted by u/ksec
BrentOzar · 5 years ago
Quick rundown of the advantages (I usually live in high-rises):

High rises usually have spectacular shared amenities: grand pools, exercise rooms, party rooms, theaters, etc. One of mine had outdoor grilling areas that you didn't even have to clean up: the apartment had cleaning staff who would scour the grills every day.

High rises usually have 24/7 door staff to sign for & lock up packages, get taxis, handle dry cleaning, store grocery deliveries in a fridge, and let you into your unit if you get locked out. The sheer number of units makes this cost-effective for them because the costs are shared across all tenants.

High rises usually have maintenance staff during business hours and on call after hours to fix issues. Sometimes you can also hire them for handyman duties, too - I've had them install TVs, hang green screens, or paint a wall.

High rises are often the only cost-effective way to live in the core of a really vibrant city like Chicago: we couldn't have afforded a town home, let alone a single family home.

tehwalrus · 5 years ago
In the UK, high rises are cheap social housing, and rarely have any of these features.

(it's possible a few nice ones were built here at there, but those are the exception - people here value houses and gardens, and nobody builds high rises with large floorspace.)

C.f. the fallout from the Grenfell Tower fire. Most of our tower blocks are like that, and all the flats are currently impossible to sell because they all have the wrong, dangerously flammable cladding on.

tehwalrus commented on John Conway   terrytao.wordpress.com/20... · Posted by u/bindidwodtj
dbmueller · 5 years ago
To me, the question that springs to mind then is: does that kind of attitude work as well for “lesser” mathematicians/people?

(I'm not sure it does)

tehwalrus · 5 years ago
They may not become famous in their fields, but they're not going to be worrying about that stuff anyway, so will probably be happier. Which, it turned out for me, was a better goal all along.
tehwalrus commented on The boss who put everyone on 70K   bbc.com/news/stories-5133... · Posted by u/orjan
lordnacho · 6 years ago
Interestingly a fair few famous academics from earlier times were quite wealthy. I think they used to be called "men of letters".

https://en.wikipedia.org/wiki/Henry_Cavendish

This guy managed to get a measurement of G (the one from high school physics) in his basement IIRC.

tehwalrus · 6 years ago
The independent wealth was what allowed them to do science in the first place, nobody else had time or equipment (at least, that's the normal rationalisation).
tehwalrus commented on Ask HN: What has your work taught you that other people don't realize?    · Posted by u/yarapavan
goatinaboat · 6 years ago
Lying in engineering means saying anything that's not true with any certainty.

It’s funny because that’s exactly an example of what I mean. Real engineering is about compromises and those are highly subjective. What’s the feature we should work on next? What tools should we use? What’s the priority of this bug? Should we refactor this today or take on more tech debt? Ask 10 people and you will get 10 answers, all of which are just as true as any other. Recognising this comes with experience.

tehwalrus · 6 years ago
Those are all things that fall into the second category (subjective stuff I wouldn't call lying). But saying that something works in X case when it doesn't (or even when you don't know for sure), and everyone estimating four stories based on that assumption, is a big problem.
tehwalrus commented on Ask HN: What has your work taught you that other people don't realize?    · Posted by u/yarapavan
goatinaboat · 6 years ago
I don’t count it as lying unless there is intent behind it. But it is certainly true that many people’s deeply held beliefs are not as true as they think they are, myself included obviously. The more experienced you get, the fewer absolute truths there are.
tehwalrus · 6 years ago
I think I agree more with the parent than with you, particularly in engineering.

Lying in engineering means saying anything that's not true with any certainty. I wouldn't hold it against someone, but I would ask them to think carefully before speaking, to make sure what they said is true, as it can lead meetings to decide the wrong actions if nobody present happens to be able to contradict it.

Outside of engineering, all the same outcomes can occur, but proving the truth is much more difficult. And thus, while it may still technically be lying, it is impossible to tell and unfair to call someone on it.

tehwalrus commented on What are those grids of glass in the sidewalk and why are they purple?   kqed.org/news/11791667/wh... · Posted by u/vo2maxer
Piskvorrr · 6 years ago
Medieval cities used to do this; essentialy a transition from a small town to an actual city, i.e. "we are no longer able to fit the place to nature, let's do the opposite thing then."
tehwalrus · 6 years ago
See also Rome, which is built on top of about eight more layers of Rome. Residents often get architectural and history students asking to look at something weird in the basement.
tehwalrus commented on Oslo had 0 pedestrian, 0 cyclist, 0 children and 1 driver trafic deaths in 2019   twitter.com/andershartman... · Posted by u/anonymfus
alistairSH · 6 years ago
In the US, pedestrian signals do NOT signal when it’s safe to cross. Cars almost always have a green in the same direction, meaning they can turn into you. I almost get run over once a month because of this.
tehwalrus · 6 years ago
When I visited the USA for a conference, I looked up a nice coffee place that was just across the street from the academic campus where I was staying. I went to the nearest crossing point, waited for several cycles of the traffic lights, and still couldn't deduce when it was safe to cross.

The road markings were black and white stripes, which mean "cars must always stop for pedestrians crossing here" where I live (UK). The description above chimes with my experience. Who does have priority when the light is red but cars are still turning right?

In the end, I went back and had the nasty coffee in the university. It seemed to dangerous to try to cross.

Edit: this is different in different states? It was in North Carolina for reference.

tehwalrus commented on Why Three Prongs? (1996)   amasci.com/amateur/whygnd... · Posted by u/nkurz
Balgair · 6 years ago
ElectroBoom has a great video on how the interplay between current and voltage works with lethality in the human body. As he shows, even 150A in your mouth can be safe:

https://www.youtube.com/watch?v=XDf2nhfxVzg

To be totally clear here: DO NOT ATTEMPT AT HOME.

tehwalrus · 6 years ago
Similarly, lowest voltage ever to kill someone was 48V.
tehwalrus commented on The unlikely resurgence of Dungeons and Dragons   inlander.com/spokane/near... · Posted by u/gscott
shemnon42 · 7 years ago
4e wasn't “discard[ing] a big chunk of its worst, thorniest rules”, it was a re-write to sell splat books and accessories, to try and turn it into pen and paper World of Warcraft, and make it a miniature focused expensive game. It failed. It was D&D in name only and an abomination to those who really cared about it.

5e was the streamlining and modularization that was needed so you could play it like it was 2e, or 3e/3.5e, or even 4e if you wanted to. 5e was a return to D&Ds roots bringing along only the good stuff it had learned in 35 years.

tehwalrus · 7 years ago
I learned 4e first (modulo a one-shot 3rd ed game a long time before). I think it has excellent potential as a system that allows you to tell stories, even if the actual game mechanics are a bit too simple for most AD&D-heads. Check out the Critical Hit podcast by Major Spoilers, to see where a very effective DM can turn even 4e into a compelling story.

(I now play 5e whenever I run a game, because I can get people to actually play it with me.)

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u/tehwalrus

KarmaCake day2886January 14, 2011
About
Senior Software Engineer at picotech.

I have a Physics PhD, am a Linux user (formerly a Mac user), I used Python and C/C++/Cython extensions to do lots of data analysis for a PhD at Imperial College London from Jan 2011-Dec 2014, working with complex systems (mathematical graphs, 3D graphics incl OpenGL, computational geometry, and physics/stat mech). As of Feb 2014, I am also a published author in Linux Format magazine (issues 180 and 182.)

I have previously worked for what3words, a software services company in north London, and a networking hardware company in Cambridge. I stood for Parliament for the Lib Dems in the UK general elections in 2015 and 2017.

https://github.com/joe-jordan

http://stackoverflow.com/users/393816/tehwalrus

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