421 karma · joined April 3, 2020
>Imaging based diagnosis could also figure out whether a particular cancer precursor is going to develop into invasive cancer and do it better than the experts we have now (otherwise we wouldn't use the AI).
Where is the evidence for these claims, other than a VC hype sheet? Like real clinical trials. These claims also show a fundamental misunderstanding of what this data can tell us. Imaging data doesn't give you tumor genetic profiles. It can give you tumor phenotype, which is associated with specific mutations. To get the true genetic profile you need to do deep sequencing at tens of thousands of dollars per tumor, and even then you have the problem of tumor heterogeneity, which lets the cancer evade the treatment.
A major concern I have working in this space is that we're selling people on grand promises of far off possibilities rather than what we can actually deliver right now.
And to clarify, I have worked on microbiome research. The whole field is a mess.
Title B: Show HN: New grep tool written in Garbage (1% better)
I guess Python is 1% worse than garbage. Lol
> Title A: kdjfs;dfisd;diofuosd
> Title B: sdlkn nmkd kljdsa;'[ (10% better)
> The winner is title B: sdlkn nmkd kljdsa;'[
This is just off the top of my head, and I'm not a biologist. I'm sure actual experienced biological researchers can come up with a whole bunch of other issues. Because more often than not biology is whole lot messier than we can imagine.
These are a few examples from Los Angeles:
https://www.washingtonpost.com/education/2019/06/17/how-does...
https://patch.com/california/studiocity/la-charter-schools-f...
https://www.scpr.org/blogs/education/2013/04/05/13188/los-an...
And the protein coding sequences are coded into proteins, except when there are alternative splicing sites, or anti-sense RNAs.
And then the protein sequence folds into their minimum free energy state, except when they are assisted by other proteins, or when they exist as disordered proteins.
And it's not always DNA -> protein. Sometimes proteins make other proteins, for example circular proteins can only be made from other proteins.
Then there are post-translational modifications, which change the RNA sequence between DNA to RNA and RNA to protein. And then there's RNA interference, where miRNAs interfere with RNA to protein translation.
And then there's epigenetics such as DNA methlyation or histone modifications (histones are protein which compress DNA) which change what genes can be expressed when.
Really, for every rule that you've been taught, there is an exception. Biology is so much more complicated than we understand. And understanding how to make a biological computer (different from the biological computing of Adelman, yes the same Adelman as RSA) would involve understanding how all the pieces fit together.