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Cake day: June 18th, 2023

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  • A long wire is an antenna that will gather electromagnetic noise from the air and turn it into random signal on the line. Shorter wires will be less responsive and therefore less noisy, and you can also mitigate the problem by grounding everything properly. It’s also possible that with the wires in that parallel ribbon, they may induce crosstalk on each other. If you want to be really careful, you could replace that big ribbon cable with an STP cable and ground the shielding jacket.

    Also, a noisy/low quality power input to the Pi will produce noise in its circuits and ultimately the output. If you can, supply the power from something better than a wall wart.


  • Your description makes belief sound like willful ignorance.

    Maybe, maybe not. In the absence of evidence, belief may be harmless, though somewhat pointless in the sense of Hitchen’s razor:

    What can be asserted without evidence can also be dismissed without evidence.

    and Newton’s flaming laser sword:

    That which cannot be settled by experiment is not worth debating.

    It certainly becomes willful ignorance if the believer avoids and/or actively rejects contradictory evidence.

    It sounds like the real challenge is knowing when you have enough information to convert your educated guess into full-blown knowledge

    The educated guess (hypothesis) becomes knowledge when it can be demonstrated by direct experiment rather than inferred/constructed from related knowledge. Also it’s important that the educated guess be testable/disprovable somehow, at least in theory (Popper’s falsifiability principle):

    Every genuine test of a theory is an attempt to falsify it, or refute it.

    So, belief is benign when it exists in an untested/untestable area and the believer is not bound to the belief emotionally. Belief is malignant when it exists in a tested area or when the believer clings to the belief emotionally. Belief is either harmless or extremely damaging, but in either case of no practical value.



  • Belief is seeing that the light is green even when it isn’t.

    Knowledge is accepting that the light is red when it is.

    Believing that the light is green will not help you when you get flattened by a truck. Knowing that the light is red will keep you from dying pointlessly.

    Knowledge is the first step on the path to wisdom. Belief is delusion.

    If you cannot demonstrate, or point to a demonstration, then all you can do is guess. You can make an educated guess based on other demonstrations, but if you cling to your guesswork as if it were demonstrated to be true, and you internalize your guesswork as part of your identity, and you refuse to let go of it when confronted with contradictory demonstrations, then you are a fool.