• 0 Posts
  • 68 Comments
Joined 3 years ago
cake
Cake day: June 11th, 2023

help-circle

  • wow, no.

    none of what you said is actually true.

    • “gridlock” happens in non-grid layouts too, the english name is just taken from american road patterns.
    • “show me…” no. YOU made a claim (that local information suffices, which is a VERY bold claim), so it’s on you to prove that local information suffices.
    • roads are absolutely NOT “like wires”; they are like pipes. which is why civil engineers commonly use fluid dynamics to simulate traffic.
    • the rest of what you said is irrelevant to everything else.

    seriously, if you make a claim contradicting both the very premise of the post, and common knowledge on the topic, then at least provide a source for that claim, lr explain WHY you think your claim is true.

    “all the information is there” is not enough information to verify the claim; it’s a wild guess without evidence to back it up.

    if shit where THAT simple, we’d have it figured out 50 years ago… it’s almost like this isn’t the simple problem you desperately want it to be…




  • I’m extremely sceptical about local data being enough to properly guide traffic…

    the problem is that intersections are connected.

    one intersection influences others down the line, wether that is by keeping back too much traffic, thereby unnecessarily restricting flow, or by letting too much traffic flow, thus creating blockages.

    you need a big picture approach, and you need historical data to estimate flow on any given day.

    neither can be done with local data.

    could you (slightly) improve traffic by using local traffic flow to determine signals? probably, sure.

    but in large systems, on metropolitan scales, that will inevitably lead to unforseen consequences that will probably probe impossible to solve with local solutions or will need to be handles by hard coded rules (think something like “on friday this light needs to be green for 30 sec and red for 15 sec, from 8-17h, except on holidays”) which just introduces insane amounts of maintenance…

    source: i used to do analysis on factory shop-floor-planning, which involves simulation of mathematically identical problems.

    things like assembly of parts that are dependant on other parts, all of which have different assembly speeds and locations, thus travel times, throughout the process. it gets incredibly complex, incredibly quickly, but it’s a lot of fun to solve, despite being math heavy! one exercise we did at uni, was re-creating the master’s thesis of my professor, which was about finding the optimal locations for snow plow depots containing road salt for an entire province, so, yeah, traffic analysis is largely the same thing math-wise, with a bit of added complexity due to human behavior.

    i can say, with certainty, that the data of just the local situation at any given node is not sufficient to optimize the entire system.

    you are right about real-time data being important to account for things like construction. that is actually a problem, but has little to do with the local data approach you suggested and can’t be solved by that local data approach either… it’s actually (probably) easier to solve with the big data approach!















  • i have a privacy/security feature request:

    lock screen prompt when trying to switch profiles.

    currently all it takes to switch is two clicks, no identity verification.

    so if you have a regular and a NSFW (or otherwise private) profile, and you give someone your phone to look at a post, it’s easy to switch to a profile that should be gated behind a verification screen…

    infinity has this feature, and it’s really nice for peace of mind!

    otherwise voyager has been excellent all around! thanks for putting the work in!


  • so, the point about shitty journalism stands, and is actually a good point.

    the point about calling CP2077 basically a scam and deceptive is not that good of a point.

    afaik, the major problem player in the botched release wasn’t CDPR themselves, although they do deserve some of the blame, but Sony:

    Cyberpunk was supposed to be one of the flagship/tech-demo titles of PC (Nvidia), PS4 (later PS5), and XBOX (whatever stupid ass designation it had at the time…xXxBoXOnExXx or some shit? …whatever).

    development started on the PS4, then it was decided that PC release should happen at the same time as console release, so the PS4 version got ported to PC.

    then the PS5 released, so development moved to PS5, which came with a bunch of upgrades and updates to the engine and other components. as one would expect.

    same thing happened with PC hardware: new specs, new features, better performance, etc.

    then, about 2-ish years (?) before release, along comes Sony and notices that “hey! the original contract said you’d release on PS4!” and CDPR obviously said “well… that’s kinda not possible anymore. the game can’t run on outdated hardware due to its performance requirements.” and Sony threatened with lawsuits and insisted on a last-gen release.

    and THAT’S where all the (major) problems started: CDPR was forced (by Sony!) to backport the MUCH more advanced version that was expected to run on MUCH more powerful hardware, which proved borderline impossible.

    this proved to be such an enormous undertaking that development on the actual game basically stopped, as they pretty much had to develop an entirely new game for the old console.

    given the recent news about Sony, is it really any surprise they made a completely ridiculous decision regarding software they obviously don’t understand the ramifications of?

    like i said, CDPR definitely deserves some of the blame here, but most of the blame lies with Sony for enforcing such a ridiculous, and technologically unfeasible, requirement without any understanding (or rather, wilfull ignorance) of the scope of said requirement.

    Sony literally would have rather not sold ANY game than adjust their contract. they were being completely unreasonable, yet CDPR commonly gets ALL of the blame, which again, they only deserve a small part of.