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preinfarction's profile
Marian Rinehart
Marian Rinehart
Marian Rinehart
@preinfarction

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Marian Rinehart

@preinfarction

Rationalist, transhumanist, moralist. Omnipresent and deathless.

Joined July 2013

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    1. Lynn‏ @chordbug 16 Apr 2018
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      harmony is really funny. because it's like, someone goes "check out my cool rational numbers collection that I've prepared", and I'm like "it's beautiful. I'm moved to tears"

      7 replies 50 retweets 177 likes
      Show this thread
    2. Gaeel Bradshaw-Rodriguez‏ @_Gaeel_ 16 Apr 2018
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      Replying to @chordbug

      Also why the hell have we evolved to be able to tell when two tones have a small integer ratio between their frequencies? That's an oddly specific thing for a brain to be able to do so precisely

      1 reply 0 retweets 6 likes
    3. Boltzmann Brain Think Tank‏ @PLT_cheater 16 Apr 2018
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      Replying to @_Gaeel_ @chordbug

      Most tones in nature do that. We've evolved to detect when what we hear does *not* do that, in order to be able to tell apart separate sound sources. Same reason why we have low acuity to green: we have to ignore information that is omnipresent (foliage).

      2 replies 0 retweets 7 likes
    4. Marian Rinehart‏ @preinfarction 22 Oct 2019
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      Replying to @PLT_cheater @_Gaeel_ @chordbug

      We don't have low acuity to greens, we have the highest acuity to greens. Two of our three types of cone cells (M and L) have peak spectral sensitivity on green, a little above and below 550 nm. We have low acuity to blue.

      1 reply 0 retweets 2 likes
      Marian Rinehart‏ @preinfarction 22 Oct 2019
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      Replying to @preinfarction @PLT_cheater and

      The fact that we have lower acuity for blues is why, back when we used 8-bit color mode in computer graphics, we could get away with a lower color depth (2 bits) for representing the blue component of colors relative to the red and green components (3 bits each).

      8:58 PM - 22 Oct 2019
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      • Ethan LaRoux - Hyphen ⚞Cuniiform⚟ Boltzmann Brain Think Tank
      1 reply 0 retweets 3 likes
        1. Boltzmann Brain Think Tank‏ @PLT_cheater 22 Oct 2019
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          Replying to @preinfarction @_Gaeel_ @chordbug

          interesting, thank you for the correction

          0 replies 0 retweets 3 likes
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