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Joined 1 year ago
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Cake day: June 15th, 2023

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  • I don’t think the sound itself is freaky (i.e. I don’t think it’d be perceived as freaky by people not familiar with it or similar messages at all).

    It’s the implication. At least I (as a non-American) associate the sound not with “generic public safety message” but firmly with “the president will now say goodbye to the nation and tell everyone to hug their loved ones one last time before the 3000 nukes/an asteroid/hostile aliens wipe out all life on Earth”.

    I think some movies also used the sound for submarine Emergency Action Messages (aka the thing that makes those 3000 nukes fly).


  • Teleportation. Invisibility is a nice gimmick (until you accidentally leave it on and get hit by a car, that is).

    Teleportation isn’t just incredibly convenient, depending on the distances you can travel in one hop it’d also save you a lot of time (skip your commute, instantly travel to a nice vacation destination and back), and it’d be a money maker (fastest courier in the world).

    Even if it was just line of sight, being able to easily reach places that are normally hard to reach or require extensive detours would be helpful. Even just crossing a busy street without having to wait for the traffic light would be a nice thing.






  • Not too good to be true, but too good to be low risk.

    15% ROI is definitely possible. Him screwing up and ending up bankrupt is also possible.

    The red flag for me is “I know nothing about business” - you can’t judge the risks. You should absolutely not invest money you can’t afford to lose into risky stuff like this. In particular, taking out a loan just to loan the money to your friend would be a really stupid idea, and if he asked you to do that, he either is stupid, reckless, or doesn’t care if you get hurt.

    I’d only consider loaning my own money with which I can afford taking the risk, and only if he could plausibly explain what he’s doing, and I felt like I can understand it and be confident that he can pull it off. I’d consider it a high risk investment on par with cryptocurrencies.

    Given that you don’t seem to fully understand and there are other red flags: stay away.



  • The bathroom/shower.

    1 kW is enough to heat 1 liter of water per minute by 14.3 degrees Celsius. If you have a 20 l/min shower head and water pressure to actually deliver that, that’s 20-30 kW of power for as long as the shower is running (if the water is heated by heat pump, that’s output power, input would be 1/4th to 1/3rd, and wastewater heat recovery is possible - but most places don’t have that and use fossil fuel or resistive heating).

    A 15 minute, 20l/min shower uses 5-7.5 kWh. You can reduce that by a factor of 6 by using a 10 l shower head and 5 minutes of water (turning the water off while you don’t actively need it). At 200 kg CO2 per MWh (natural gas), that’s 0.3-0.45 tons of CO2 saved per year.

    Likewise, lowering the thermostat and saving heating can make a huge difference.

    In general on a large scale, living in a smaller apartment is “greener”, since less space needs to be heated, but also less space has to be built, and higher density means less travel.

    Heating/housing, food, and travel are typically the biggest parts of your footprint. For travel, distance matters more than the way you move. Flights aren’t great per km traveled but what makes them really impactful is that they make it practical to travel large distances. (Keep that in mind when you see “green” politicians trying to propose measures - often these measures are either purely symbolic, adding annoyance without benefit, or work mostly by making it impractical/undesirable to travel or do otherwise enjoyable things).







  • larger glassware

    Thinking of a typical US fast food soda cup: understatement. For comparison, a German McDonald’s “Large” (the largest available) is 0.5 liters (17 oz). In the US, a “Medium” is 18 oz (0.53 l) or 21 oz (0.62 l) depending on who you ask, and, it goes to 30 (0.89 l) or 32 oz (0.95 l). And I’ve seen complaints that Wendy’s shrank their large from 40 oz (1.18 l) to 35 oz (1.04 l). That’s not a cup, that’s a bucket!

    A sit down restaurant in Europe will typically have soft drink serving sizes from 0.2 to 0.4 liters. The 0.2 is… unsatisfactory.