• 6 Posts
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Joined 2 years ago
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Cake day: June 18th, 2023

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  • You need to roll two dice to get a sum of seven. Consider two fair dice: No matter what the first dice lands on, there’s a 1/6 probability that the second dice lands on the number you need to get a total of seven.

    Consider now that one dice is weighted such that it always lands on 6. After you’ve thrown this dice, you throw the second dice, which has a 1/6 chance of landing on 1, so the probability of getting seven is still 1/6.

    Of course, the order of the dice being thrown is irrelevant, and the same argument holds no matter how the first dice is weighted. Essentially, the probability of getting seven total is unaffected by the “first” dice, so it’s 1/6 no matter what.



  • I’ll add on that a lot of (most?) modern cars have some kind of “phone home” capability that can likely be tracked. Park well away from your destination, and avoid using public transportation if there’s camera surveillance there.

    Make sure to bring some cash and/or a prepaid card. You never know when you’ll wish you had it.

    A plyboard sign doubles as a shield, a cardboard one does not.

    Consider bringing earplugs and/or headphones in case flashbangs are thrown.





  • I’ve used this kind of short-range FM sender in an older car to get Bluetooth capability. Just set it to some available frequency and save the channel as “AUX” or something, then you can switch from the radio to Bluetooth by just switching to that channel. Works like a charm.

    Of course, you’ll have to live with the fact that the car next to you can tune in on the signal, but I’m very rarely in still-standing queues so I’ve never thought twice about it. I believe the range of the sender is like 20 m to a normal car radio.






  • I’m not really into conspiracies, but I enjoy fantasies about the harmless “what if”'s around stuff like this.

    What if there actually was an advanced civilisation before us that built the pyramids and was wiped out by some global natural disaster…

    What if extraterrestrial life has visited us and exchanged technology with us, but the civilisation that received it disappeared for some reason…

    What will future humans think in 10 000 years if our civilisation is wiped out in 200 years and they start finding remains of our cities and tech?

    It makes for fun thought experiments and story prompts.



  • Exactly! I’m sick of people being labelled as racist because they’ve said some keyword that someone has decided makes them racist, even when their intents and opinions are clearly not racist.

    Saying it’s “uncivilised” to publicly beat someone to death because they <insert whatever>, cannot be racist, because you’re not concerned with “race” in any way. Going further and saying that a country that allows such practices is uncivilised is, again, inherently not racist, because the reason for calling them uncivilised has nothing to do with the “race” of the people involved.


  • I second this! I was in the US for a while and quickly realised that doing constant conversions was a PITA, so I learned some rough reference points in imperial.

    I think it’s good to get some small and some large reference points, which make it easy to guesstimate other things based on what you know. Mine were (given in metric here):

    • A glass of beer is 0.5 L.
    • A big barrel is about 200L (0.2 m^3).
    • My walk to work is 3 km, a long hike is 25 km.
    • A very short person is about 150 cm, a very tall one is about 2 m.
    • I can deadlift about 100 kg, and bicep curl around 15 kg.
    • A potato is on the order of 100g, while a watermelon is around 2kg.
    • 70 C is a nice sauna, 25 C is a nice summer day, 10 C is chilly, 0 C is sleet-temperature, -10 C is powder snow cold (depending on where you live the colder temps might be more or less relevant)

    Figure out some similar things for yourself, and it’ll be relatively easy to think along lines like “That walk was a bit further than my way to work, so it’s probably about 4km”, or “that box was heavy, but far from 100 kg, so it’s maybe around 30 kg.”

    Bonus points if you try some guessing like that and double check afterwards to tune in your feeling for different measurements.



  • I think you’re missing my point: I opened by saying that I definitely believe the world is deterministic. I then went on to problematise the extremely unpredictable nature of the human mind. To the point where an immeasurable amount of historical input goes into determining what number I will say if you ask me to think of one.

    Then, I used the argument of a chaotic system to reconcile the determinism of the universe with the apparent impossibility of predicting another persons next thought. A highly chaotic system can be deterministic but still remain functionally unpredictable.

    Finally, I floated the idea that what we interpret as free will is in fact our mind justifying the outcome of a highly chaotic process after the fact. I seem to remember there was some research on split-brain patients regarding this.


  • By and large, I agree with you: I cannot see how free will fits into a deterministic universe. I still want to make some points for the case that there is some form of free will.

    Think about scratching your nose right now, and decide whether or not to do it. It’s banal, but I can’t help being convinced by that simple act that I do have some form of choice. I can’t fathom how someone, even given a perfect model of every cell in my body, could predict whether or not I will scratch my nose within the next minute.

    This brings up the second point: We don’t need to invoke quantum mechanics to get large-scale uncertainty. It’s enough to assume that our mind is a complex, chaotic system. In that case, minute changes in initial conditions or input stimuli can massively change the state of our mind only a short time later. This allows for our mind to be deterministic but functionally impossible to predict (if immeasurably small changes in conditions can cascade to large changes in outcome).

    I seem to remember reading that what we interpret as free will is usually our mind justifying our actions after the fact, which would fit well with the “chaotic but deterministic” theory.