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Cake day: June 20th, 2023

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  • Jrockwar@feddit.uktoADHD@lemmy.worldCoffee and ADHD
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    26 days ago

    Coffee is a stimulant, which is known to help people with ADHD. In fact, ADHD drugs are also stimulants.

    The productivity effect you describe is what many ADHD folks get with coffee. The brain finds it easier to focus under stimulants so you get more productive, and even relax a bit because of quieting your inner “running commentary” that keeps you jumping from one task to another.

    However, that doesn’t mean that ADHD makes you immune to caffeine or that stimulants can’t have a stimulating effect on you. After 10 coffees, you’d feel jittery like the rest of mortals, and experience a caffeine crash afterwards, or find it harder to sleep at night - all of those are normal effects that caffeine has in the human body.

    The other part to what you’re describing is just normal caffeine tolerance. All drugs have this to some extent, but I find that it’s rather easy to build tolerance to caffeine, and its effect feels smaller and smaller gradually over time. For me, the best way to avoid this is to limit my intake on weekends and/or not have 7 double espressos on workdays (which I’ve done way too many times and is not a good idea). If you don’t have coffee for a month, the first one after that period will really have a strong effect.

    I appreciate everyone’s brain chemistry is slightly different, but for me, coffee doesn’t make me very nervous or “buzz”, but the biggest effect is that I focus better. If I start working in the morning and don’t have a coffee, even if I feel awake, my brain will keep jumping from one task to another and struggle to maintain concentration and do anything useful. The first coffee makes that go away, it’s like my brain “latches” onto tasks more easily. I can actually work on something for half an hour without going on a wild goose chase of “what is the best calendar app that also syncs notes to my phone” or whichever is the distraction of the day.

    As a bit of an experiment, I would suggest for a few weeks you pay attention to these things to understand well the effect it has on you, and treat it (i.e. dose it) as a delicious medication. 😄



  • Jrockwar@feddit.uktoADHD@lemmy.worldWhat's your job?
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    1 month ago

    Same, more or less. I work with self driving cars, in software integration (for people not familiar, that is putting together the software components other teams make, and solving the interactions between them).

    It’s supremely fun. Constantly changing, chaotic, requires me to see the whole picture and never keep detailed focus on a specific part for very long. I love it.


  • For those two examples, I’d either keep looking or lower the requirements if I believe it’s absolutely impossible - it all depends on the time constraints.

    If I have 8 months more to look for a job, I won’t care / lower my expectations. If I need a job now, I’ll find whatever and look for a better job in the meantime.

    On the vacation example, I would keep trying to find a place where I want to stay until I’m actually pressed for time - then I’d look for a place further away or lower the requirements.

    Sometimes trying harder works, but the times it doesn’t, it’s more valuable to find something not-so-nice and settle than to keep stressing and trying to find something impossibly good, without achieving anything.


  • Improvisers unite ✊

    I have accepted I can plan about 20% and the rest will have to be solved on the fly. The world is confusing. There are too many things happening at once for anyone (definitely at least for myself!) to keep track of everything. My goal when planning is not to set out exactly what I’m going to do, but rather to reduce uncertainty and gather information to improvise effectively if needed.


  • The problem I have is that this covers a very niche use case for me. I want it to be a tablet - lightweight etc, but not be constrained by mobile apps. I don’t want iOS’ version of lightroom, I want to have Darktable and Rawtherapee and a full fledged Visual Studio code, and well, you get the picture.

    I don’t need a laptop because I also have a MacBook Pro - I went this way because Apple’s processors are too far ahead to ignore. So I can take AMD but my opinion is that intel’s offerings are just not competitive and I’m not buying any of them.

    This leaves me with very few options - I’d be keen on buying an AMD-powered Ubuntu tablet but they don’t seem to exist.

    And also my surface works perfectly fine, so spending a non-trivial amount of money and ewaste just to change OS seems rather silly. I’m sticking to that one for now.



  • If only I could install it on the Surface Pro X…

    Damn, they worked so hard to gain goodwill in the last few years and it seems they’ve set out to destroy it in record time.

    WSL and WSL2, Android Apps, working with Qualcomm to get their ARM computers to a credible state, the new Powershell and the push to open source so many things…

    And in the past 12-18 months they’ve been crashing and burning, either backtracking on those things or by starting new initiatives to become scummier and scummier. TPM, Copilot, the ad situation, abusing their position of power with office/teams, the giant safety holes in the Recall feature… But it seems every day there’s something new in the news. It’s never ending.



  • In a car with ABS, two sets of tyres with different grip will have a different point at which tyres lock up, with grippier tires locking up later and ABS letting the brakes bite harder before acting.

    Now a harder question is whether a tyre with less rolling resistance will be less grippy. All things equal, yes, it will. Tyres grip by deforming and creating friction in the contact patch, and the point of these tyres is to reduce friction.

    To make up for this, manufacturers use clever designs (e.g. where tyres can deform more under certain conditions) so that they can retain characteristics similar to tyres with more rolling resistance. Of course, everything in engineering is a compromise, which means that A) these tyres are more expensive because of the additional complexity and B) the design and materials science can only go so far and they have indeed slightly less grip; otherwise all the tyres would be like this.

    As an anecdote, Toyota sold the GR86 with Michelin Energy Saver tyres fitted as standard (in Europe at least) for “grip” reasons: they allowed the car to drift at really low speeds (some car journalists commented that it was remarkably easy to take roundabouts sideways at legal speeds).


  • That middle paragraph is very misleading. It’s Generative AI as a service that is actively harmful to the environment. Having a 15 W chip to do tasks like erasing objects from a photo is not any more harmful to the environment than a GPU that uses 15W. In fact, NPUs can be more efficient at some tasks than GPUs.

    The problem is opening your phone/browser, and being able to call on demand GPT-4 to wake up a cluster of 128 Nvidia A100s operating at around 300-400W each. That’s 51.2 kW.

    Now you can draw some positives and negatives from that figure, such as

    • Given that an iPhone 15 Pro’s A17 has a thermal design power of 8 W, GPT-4 on the server is about 6400 more energy intensive than anything you can do on an iPhone. 10 seconds of GPT need a similar amount of energy to an iPhone 15 Pro operating flat out at maximum power for 18 hours. Now in those 10 seconds, OpenAI says they “handle multiple user queries simultaneously”, but still - we’re feeding the machine.
    • 51.2 kW is also roughly how much power a large SUV needs to roll at constant speed on a motorway. Each of those large clusters uses a similar amount of energy to a single 7-seater SUV, but serving many users at the same time. Plus unlike cars, a large portion of their energy usage comes from renewables. So yes, I agree that it’s a significant impact but largely overrepresented and we have bigger fish to fry; personal transport is a way bigger issue.




  • I agree with the philosophy, but not with the approach.

    If you own/make the OS, and you know that the registry can get orphan entries which slow down the system, don’t wait for the user to open an “optimisation app” to clean that up. Just make sure the registry is cleaned transparently and in the background.

    This seems to me like a tactic to get less tech-savvy people to accidentally set Edge as their browser and ensure their Ads and Microsoft’s tracking is working as the mothership mandates. Worst part is we have evidence to think I’m not being the slightest bit cynical here…