zro (u/zro) - Readit News

zro commented on Cross Views moultano.wordpress.com/20... · Posted by u/moultano

When they wrote "your screen can display 3D photos", I thought it would be a hardware hack and not something that depends on a human physiology hack.

Something like stereoscopic GIFs come to mind, e.g. https://tenor.com/fr-CA/view/dain-stereoscopic-daingifs-3d-m...

In other words, taking the two images and swapping them quickly creates the illusion of depth.

Edit:

Looking into it, there's a word for it. Wiggle stereoscopy: https://en.wikipedia.org/wiki/Wiggle_stereoscopy

zro · a year ago

There's a whole bunch of these over at https://old.reddit.com/r/wigglegrams/ if you want more

zro commented on How much energy does desalinisation use? Is it “absurdly cheap”? sustainabilitybynumbers.c... · Posted by u/philipkglass

throwaway2016a · a year ago

My guess is that the average is very different than the median here. In general there are a few considerations:

- Green lawns are considered a status symbol in the US and in many higher end neighborhoods houses run irrigation multiple times a day.

- Same goes for pools.

- Baths are common (especially for kids) and use a fair amount of water.

- Our toilets and showers are not efficient.

- We tend to do laundry and dishes with machines (though I'm not sure if that would really use more or less water).

I also suspect that number may include industrial and commercial. Since even considering the above it still seems high.

zro · a year ago

Washing dishes with the machine actually tends to save quite a lot of water, as long as you actually fill the machine.

zro commented on How to build a 50k ton forging press construction-physics.com/... · Posted by u/chmaynard

kragen · 2 years ago

you cunninghammed me: nalgenes are polycarbonate, which is a lot less inert

all the polyethylenes are relatively inert, because polyethylenes are in some sense just heavy paraffins. paraffin is germanized latin for 'relatively inert'

zro · 2 years ago

The clear Nalgenes are polycarbonate, but the opaque ones (sold as "Ultralite Bottle" on their website) are made of HDPE

zro commented on The Law of Leaky Abstractions (2002) joelonsoftware.com/2002/1... · Posted by u/skm

cloogshicer · 2 years ago

Interesting, I'm curious though, once you do drop down to the ASM layer, how do you ensure that this code doesn't get overwritten by new compiler output? Or is this something you somehow include in the compile step?

zro · 2 years ago

In my experience (admittedly limited) you include the assembly in the compile step. Your linker hopefully puts everything together so you can talk to yourself

zro commented on Why does holding a key fob to your head increase its range? physics.stackexchange.com... · Posted by u/jasonhansel

srcreigh · 2 years ago

We need to cross analysis people across the axes of tall/short and large/small head for posterity

zro · 2 years ago

Tall with large head here, works pretty consistently for me

zro commented on A successful example of "adversarial collaboration" statmodeling.stat.columbi... · Posted by u/Tomte

ReactiveJelly · 2 years ago

That reminds me, this thread should link to the yes/no debate: https://yesnodebate.org/

It only works with 2 people / parties at a time, and it only works if you both respect each other to obey the format. I think if both people don't respect each other, they were never going to have a productive debate in the first place.

zro · 2 years ago

This is a super interesting concept and I'd never heard of it. Thanks for linking!

zro commented on Is DALL-E 2 ‘gluing things together’ without understanding their relationships? unite.ai/is-dall-e-2-just... · Posted by u/Hard_Space

miguelxpn · 4 years ago

That book gave me the highest dose of existential crisis I've ever felt. I should probably re-read it.

zro · 4 years ago

Blindsight is one of my all time favorite books.

Looks like it's still available for free from the author's website [0]

[0] https://www.rifters.com/real/Blindsight.htm

zro commented on Intermittent fasting 2 days vs. 1 day per week oa.mg/blog/intermittent-f... · Posted by u/sgfgross

von_lohengramm · 4 years ago

On average, sure, but there are plenty of metabolic outliers, and I doubt those seeking weight loss are on the higher end. My weight was surprisingly consistent at 1300kcal/day.

zro · 4 years ago

As an outlier more towards the other end, my weight tends to fall if I go below about 2500 kcal/day

zro commented on Optimizations Enabled by -ffast-Math kristerw.github.io/2021/1... · Posted by u/bwidlar

tcpekin · 4 years ago

Why is this compiler optimization beneficial with -ffinite-math-only and -fno-signed-integers?

From

    if (x > y) {
      do_something();
    } else {
      do_something_else();
    }

to the form

    if (x <= y) {
      do_something_else();
    } else {
      do_something();
    }

What happens when x or y are NaN?

zro · 4 years ago

> NaN is unordered: it is not equal to, greater than, or less than anything, including itself. x == x is false if the value of x is NaN [0]

My read of this is that comparisons involving NaN on either side always evaluate to false.

In the first one if X or Y is NaN then you'll get do_something_else, and in the second one you'll get do_something.

As far as why one order would be more optimal than the other, I'm not sure. Maybe something to do with branch prediction?

[0] https://www.gnu.org/software/libc/manual/html_node/Infinity-...

zro commented on Find Someone to play chess with in London otbchess.org/t/london-eng... · Posted by u/rasulkireev

DougBTX · 5 years ago

zro · 5 years ago

Nf3

u/zro

KarmaCake day31January 14, 2020

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