Ruxandra Teslo 🧬 Profile picture
Mar 21 11 tweets 3 min read Read on X
I wrote an entire post abt this. Imo, that's not the issue. Modern biology was in large part invented by physicists/ physical chemists/ mathematicians. Crick was a physicist. All the early protein crystallographers were physical chemists.

writingruxandrabio.com/p/why-havent-b…Image
Yes, there was a time when protein structures weren't solvable with the latest software. Where you needed to know Maths etc. Elspeth Garman, distinguished professor of protein crystallography in the Oxford Biochem department when I was there was a physicist by training Image
Then came the human genome people. Richard Durbin.

Eric Lander - a mathematician by training and as influential a biologist one could dream of - former Science Advisor. He was the Head of the richest institute in Biology - The Broad. Image
The single cell stuff. Aviv Regev co head of the Human Cell Atlas. Also quantitative scientist by training. Image
So what if you know the structure of DNA? So what if if you know all the protein structures? So what if you have single cell RNAseq from all cells in a tissue? These things helped, but they didn't "solve biology"

Biology is always more complicated
Maybe AI will solve this all.

But my point is -- we always had great quantitative talent in bio. Would we benefit from more? For sure. Are our coding practices degenerate? Yes. Should we be using Python instead of R? Yes.
But my point is that this was not the bottleneck that stopped us from "solving biology". Ultimately, we do have good protein structures due to all the work of the physical chemists. We do have the genomes of countless species. We do have the epigenomics. We do have this and and this and this
It's weird to act as if modern molecular biology founders weren't at least 50% coming from other fields. At the very least. Physics Maths Chemistry. Did it solve disease ? Nope.
Now @nvidia is investing in Bio. And top AI scientists like @mmbronstein are involved in bio problems and bio start ups and so on. And I hope they solve it, finally. But I just wanna stress that Bio is and has always been the first domain ppl with quantitative training
@nvidia @mmbronstein Turn their attention to when they wanna do smth a bit different -- because they see it as meaningful. And yes, it would be good if we had even more of this talent. But no, I don't think this has been the bottleneck so far.
@nvidia @mmbronstein (And, again, maybe with AI this will change). But I see people doing AI for bio everywhere. So what's the issue then?

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More from @RuxandraTeslo

Mar 22
I was saying this exactly 2 years ago when it was highly unpopular and Evth since then has proven me right. Science aligning itself with politics has hurt it. And people at the top like Holden are responsible for it.
This is when scientific American endorsed Kamala Harris and some of our brightest science communicators cheered it

x.com/ruxandrateslo/… x.com/ruxandrateslo/…
I said back then academia had a problem of trust and this where the "misinformation crisis" was coming from. And if it wanted to solve misinformation it had to solve trust and appear more neutral/ aligned with public opinion.

writingruxandrabio.com/p/misinformati…
Read 6 tweets
Mar 13
One's 30s are a crucial period for professional advancement. Especially in so-called "greedy careers": those where returns to longer hours are non-linear.

But one's mid 30s is also when most women's fertility starts to drop 🧵

worksinprogress.co/issue/fertilit…
In this piece, I lay out how a large part of the "gender pay gap" is just this: a motherhood pay gap. And, as Nobel Laureate Claudia Goldin points out, this is particularly true in high-stakes careers like business, law, medicine, entrepreneurship and so on. Image
This reduction in earnings is not just about money either: it's about general career advancement and personal satisfaction with one's profession. Time lost in one's 30s is hard to recuperate from later on.

In law, for example, one's 30s is when the highest levels of salary growth take place. Founders who launch unicorns (startups worth more than a billion dollars) have a median age of 34 when they found their companies. In academia, one’s thirties are usually the time when a researcher goes through a string of high-pressure postdoctoral positions in an attempt to secure an independent position.Image
Read 44 tweets
Feb 19
I'm often critical of scientists, but the fact that such studies exist stands testament to the relative lack of corruption and impartiality of Western institutions. Also, Alex is being misleading here. Let me explain 🧵
Firstly: what is T cell exhaustion? It's a natural state T cells (a type of immune cell) can find themselves in after being stimulated by antigens for a prolonged period of time.

Exhausted T cells become less capable of dividing and performing their natural, healthy functions.
A relative increase in the number of exhausted T cells is observed in a number of pathological states, including cancer and viral Infections.

That's right! Viral infections themselves induce T cell exhaustion!
Read 6 tweets
Dec 25, 2024
I understand that getting a health claim denied is personally devastating, but without denying claims, is the insurance industry even viable? It seems to me like there's a lot of rent seeking in healthcare and some procedure prices are too high, but is this the fault of insurance companies?
Like, there's a finite amount of money that can go to healthcare and someone needs to manage who gets what.

In places like UK, where healthcare is socialised, you are also "denied" procedures, albeit not by a specific company.
It usually takes the form of certain medicines not being available at all because they are not deemed to pass cost benefit analyses. Or procedures taking very long and cheap alternatives being tried first. For example, I once had a condition for which I was treated in the UK
Read 5 tweets
Aug 13, 2023
Why and how did Late Roman Aristocrats become Christian? This book tries to answer what is seemingly a a paradox (given that Christian values are seemingly at odds with Roman aristocratic values) 🧵:

A lot of emphasis placed on explaining this via status mechanisms, as the author puts it well here:

“The aristocrat’s concern for belonging to the right status group extended to religion. Senatorial aristocrats traditionally sought pagan priesthoods because they offered another arena in which to demonstrate and augment honor; pagan ceremonies, rituals, festivals, and holidays had for centuries allowed the aristocrat to assert preeminence in public. At home pagan family rites reinforced the patriarchal social order, conferring prestige on male aristocrats. In private cultic settings the aristocrat gained honor before his peers. To western aristocrats in the early fourth century, then, adopting Christianity presented a special sort of problem. How would changing religion affect their lifestyle and the institutions and values by which they lived? Most important from an aristocrat’s perspective, would the adoption of Christianity entail a loss of status?”
Defining the Senatorial Aristocracy

“Perhaps the most important non official criterion for membership in the senatorial aristocracy is the one hardest to trace from a distance, namely acceptance by fellow aristocrats. Symmachus pointed to the weight placed upon peer approval in a speech delivered to the Roman senate concerning one Valerius Fortunatus who, upon reaching maturity, “vowed to recover that which which he had sought on the grounds of his birth, perhaps at the instigation of good breeding, which always recognises itself”

Symmachus argues that the young man ought to be admitted to the senate, despite his poverty, for his birth and good breeding made him easily recognisable as “one of us”.

The need for affirmation of inborn aristocratic by his peers points to a key fact of aristocratic life: aristocrats needed mutual recognition and acceptance. In essence, they defined each other. Recognition could compensate for even modest birth or inadequate wealth”
Resources of the Senatorial Arisocracy

“Unlike a modern capitalist who sees wealth and property as ends in themselves, the Roman senatorial aristocrat viewed his resources as a means of asserting and augmenting his status and that of his family and relations, friends and at times emperors (…)

Land was typically the basis of wealth. Senatorial aristocrats derived only a fraction of their wealth from moneylending and they did not receive salaries from holding public office (…) landowning was valued not only as a resource but as a visible sign of personal status; aristocrats associated rural estates, seaside retreats and urban villas with the activities and values that marked the elite. After all, equestrians could be quite wealthy; it was how one used wealth that revealed status”
Read 16 tweets

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