msuvakov's comments

On: The complete sequence of a human Y chromosome

[msuvakov]

This news should be dated back in December, not now.

The T2T team published a preprint [1] last December and released the data [2] in March. However, due to the peer review process, the findings have only just been formally published in Nature. The publication timeline can indeed be slow, and in cases like this one, the question is: what's the point when all scientists interested in the topic already know about it and working with this assembly?

[1] https://www.biorxiv.org/content/10.1101/2022.12.01.518724v1.... [2] https://github.com/marbl/CHM13

[goodcanadian → msuvakov]

what's the point when all scientists interested in the topic already know about it and working with this assembly?

In this context, I would say the point of a press release is getting the news out generally to non-scientists.

On: random(random(random(random())))

[msuvakov]

I forked it with similar idea: https://openprocessing.org/sketch/1929687

[em-bee → msuvakov]

heh, neat. next up a 7x7 grid with the even distribution at the center :-)

On: Djokovic's PCR test was manipulated?

[msuvakov]

They probably generate ID when results are stored in database, not when samples are taken. Difference in processing time explains this. What are the dates of result (stated at the bottom of the pdf)?

On: Djokovic's PCR test was manipulated?

[msuvakov]

Updated plot (29 test data from volontiers) is available here: https://twitter.com/msuvakov/status/1481033480901431297

Only outlier is Djokovic's positive test. It perfectly fits to 26. December, the same date timestamp was created.

[saberdancer → msuvakov]

Thank you. I'd say that is very convincing, especially with him walking about on 16, 17th and 18th.

When scanning a QR code, is the date visible anywhere on the page? I am trying to guess whether someone just edited a PDF with a different date (might explain why they chose 16.12 - you need to change a single number). Alternative would require someone back dating a test in the system.

In any case, not a good look for Djokovic.

[msuvakov → saberdancer]

No, that is the weak point of this system. Anyone can change date in pdf and no one can check that except Serbian authorities. The only limit for date is one year after test because verification system (qr code link) is set not to validate older tests.

On: The size of the moon, relative to the Australian m...

[msuvakov]

More precisely a quarter:

38 million km2 (Moon area) : 150 million km2 (land area of the Earth) = 25%

On: Tail recursion in Python

[msuvakov]

It should be:

  def tail_factorial(n, accumulator=1):
    if n == 0: return accumulator
    else: return tail_factorial(n-1, accumulator * n)

On: One Bitcoin miner is buying 20,000 16nm wafers fro...

[msuvakov]

Primecoin is an example: https://primes.zone

On: A prime number whose binary representation looks l...

[msuvakov]

Cool but old. It can be done in any number base, e.g. in decimal: https://www.youtube.com/watch?v=fQQ8IiTWHhg