tag:blogger.com,1999:blog-3993498847203183398.post7836384583972643285..comments2024-03-29T15:23:18.491+00:00Comments on RevK<sup>®</sup>'s ramblings: BNT162b2 Pfizer COVID vaccine, on paper tape!RevKhttp://www.blogger.com/profile/12369263214193333422noreply@blogger.comBlogger6125tag:blogger.com,1999:blog-3993498847203183398.post-28062810776576757762020-12-28T17:55:00.971+00:002020-12-28T17:55:00.971+00:00The triplet codon scheme used by DNA is actually a...The triplet codon scheme used by DNA is actually a fairly good coding scheme if what you're aiming for is resilience against random mutation disrupting the emitted amino acid string too often. About decade ago they did a search, and in the space of possible three-codon coding schemes, the one we have is among the most resilient. (Why that coding scheme *in particular* was chosen, over the millions of others with similar resilience... the best guess I've seen is that it's often directly connected to the method used to synthesise each amino acid: exaptation, again.)Nick Alcockhttps://www.blogger.com/profile/06590610308528769844noreply@blogger.comtag:blogger.com,1999:blog-3993498847203183398.post-52071944926868134582020-12-27T10:37:49.509+00:002020-12-27T10:37:49.509+00:00It is a missed opportunity that QR coding does not...It is a missed opportunity that QR coding does not have a character set coding for the exact 64 characters normally used in base64 which would be 100% efficient but still "text".RevKhttps://www.blogger.com/profile/12369263214193333422noreply@blogger.comtag:blogger.com,1999:blog-3993498847203183398.post-54827659791439907982020-12-27T05:24:16.434+00:002020-12-27T05:24:16.434+00:00Bear in mind the RNA uses a similarly poor coding ...Bear in mind the RNA uses a similarly poor coding of 6 bit codon to code for only 20 amino acids.RevKhttps://www.blogger.com/profile/12369263214193333422noreply@blogger.comtag:blogger.com,1999:blog-3993498847203183398.post-5660832387825831262020-12-27T05:18:13.545+00:002020-12-27T05:18:13.545+00:00Oh, and also, BASE32 does not throw away as much a...Oh, and also, BASE32 does not throw away as much as you think in a QR as it uses a smaller character set coding where it can. So packed in to only slightly more than 5 bits per 5 bits. Unlike ascii that puts each 5 bits in to 8 bit bytes.RevKhttps://www.blogger.com/profile/12369263214193333422noreply@blogger.comtag:blogger.com,1999:blog-3993498847203183398.post-34537121552748493322020-12-27T05:15:56.060+00:002020-12-27T05:15:56.060+00:00I did try binary first. A QR code can, but I looke...I did try binary first. A QR code can, but I looked for an ECI to mark a QR as “unspecified binary data” and there isn’t one, they are all “character coding” of some sort. So when done as binary readers try to understand in the context of a character coding.RevKhttps://www.blogger.com/profile/12369263214193333422noreply@blogger.comtag:blogger.com,1999:blog-3993498847203183398.post-13431863330557247722020-12-26T23:53:02.156+00:002020-12-26T23:53:02.156+00:00Why do things have to be Base32 or Base64 or base ...Why do things have to be Base32 or Base64 or base anything encoded? What is wrong with binary ie, 0 to 255? Can a QR code not encode binary? Why are we always throwing all these bits away just to encode things as text?Owen Smithhttps://www.blogger.com/profile/00890951742186614705noreply@blogger.com