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JulianWasTaken commented on Erdős Problem #1026   terrytao.wordpress.com/20... · Posted by u/tzury
gaigalas · 8 days ago
Is it trivial for any mathematician to understand lean code?

I'm curious if there is a scenario in which a large automated proof is achieved but there would be no practical means of getting any understanding of what it means.

I'm an engineer. Think like this: a large complex program that compiles but you don't understand what it does or how to use it. Is such a thing possible?

JulianWasTaken · 8 days ago
It's not trivial for a mathematician to understand Lean code, but it's something that's possible to learn to read and interpret in a day (without then necessarily being proficient in how to write it).

That's true though of Lean code written by a human mathematician.

AI systems are capable (and generally even predisposed to) producing long and roundabout proofs which are a slog to decipher. So yes the feeling is somewhat similar at times to an LLM giving you a large and sometimes even redundant-in-parts program.

JulianWasTaken commented on Why do some gamers invert their controls?   theguardian.com/games/202... · Posted by u/zdw
wewewedxfgdf · 3 months ago
It drives ma absolutely bananas that you cannot easily invert your mouse wheel direction in either Windows or Macos.

When I scroll up my brain breaks because the display goes in the opposite direction to what I expect.

You'd think it would be a key feature because every game provides direction inversion.

JulianWasTaken · 3 months ago
What are you referring to? Inverting scroll wheel direction in macOS is trivial (and one of the first things I change), you just uncheck the "natural scrolling" checkbox.
JulianWasTaken commented on Wait4X allows you to wait for a port or a service to enter the requested state   github.com/wait4x/wait4x... · Posted by u/atkrad
JulianWasTaken · 3 months ago
I found this a few months ago and use it for something totally unrelated to containers -- namely on my Tailnet I have machines on my home LAN which I want to connect to even though they are asleep. I haven't been bothered to learn whether I can set up Wake on Lan requests triggered from my router to get them to wake up on demand even when I'm not on the actual LAN, so instead, when I want to connect to them, I use wait4x with a TCP connection to wait till the machine wakes itself up momentarily every few minutes, and then finally run what I want (which is usually either git pull or sshing into the machine).
JulianWasTaken commented on Bookmarks.txt is a concept of keeping URLs in plain text files   github.com/soulim/bookmar... · Posted by u/secwang
account42 · 4 months ago
I think this is going in the wrong direction. While cool URIs don't change [0], many URLs that you'd like to bookmark are not cool. So for bookmarks to be useful long-term you need to store much more data than just the URL. At the very least you need a timestamp to be able to find the resource you wanted to bookmark on the Internet Archive in the future. But better would be to save a snapshot of the site alongside the bookmark instead. It's a shame that no browser cares to integrate that or other relatively simple usability enhancements instead of blindly copying Chrome's UI (which usually means removing features).

[0] https://www.w3.org/Provider/Style/URI

JulianWasTaken · 4 months ago
> It's a shame that no browser cares to integrate that

I'm trying out using the Obsidian Web Clipper extension, which essentially does this (and using it for anything I'd previously have bookmarked).

JulianWasTaken commented on Installing a mini-split AC in a Brooklyn apartment   probablydance.com/2025/08... · Posted by u/ibobev
JulianWasTaken · 4 months ago
Not directly relevant, but my PTAC in NYC started having issues this summer just as things got hot (of course).

The compressor would come on for a few seconds then shut off.

After 2 different HVAC companies quoted me $275 to come out (plus hourly and the repair once they find the issue) and then also told me it would be 10 days before they had availability I finally bit the bullet, bought a $30 multimeter, watched a few videos on how capacitor failure is super common and how to hopefully not kill myself, and after confirming with the multimeter and buying the $7 capacitor everything was right back to working with 2 minutes of work.

I did have a moment where I dreaded thinking I'd need to replace the unit and if so whether I'd want a split put in but for $53K I'd better get a third job... Quite glad not to have had to get too far down this road.

JulianWasTaken commented on Using Microsoft's New CLI Text Editor on Ubuntu   omgubuntu.co.uk/2025/06/m... · Posted by u/jandeboevrie
jayd16 · 6 months ago
Its safer in an unfamiliar terminal than accidentally killing the app with Ctrl-c.
JulianWasTaken · 6 months ago
Always a take which sprouts vehement arguments, but this is something macOS gets extremely right, as Cmd-C, Cmd-V, etc. indeed work everywhere including the terminal, and Ctrl-C in the terminal is reliably SIGINT.
JulianWasTaken commented on My Mac contacted 63 different Apple owned domains in an hour, while not is use   appaddict.app/post/my-mac... · Posted by u/rpgbr
lapcat · 6 months ago
Little Snitch can detect and block connections at the process level.

https://www.obdev.at/products/littlesnitch/index.html

JulianWasTaken · 6 months ago
JulianWasTaken commented on Show HN: I wrote a modern Command Line Handbook   commandline.stribny.name/... · Posted by u/petr25102018
petr25102018 · 7 months ago
Thanks.

You teach this in a classroom?

JulianWasTaken · 7 months ago
I do, it's given as a seminar twice a year.
JulianWasTaken commented on Show HN: I wrote a modern Command Line Handbook   commandline.stribny.name/... · Posted by u/petr25102018
JulianWasTaken · 7 months ago
Looks very nice!

I have an interactive tutorial I wrote and teach with which is here: https://github.com/JulianEducation/CommandLineBasics in case it's useful as well. I only have 90 minutes in my case so it's a constant battle to tweak what I can get to with my audience, so there's still lots of things I want to change.

But I think it's very important to have lots of resources here so I'm excited to look at yours.

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KarmaCake day998June 29, 2012
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