Best of Twitter - Week of September 13, 2021
A reminder of what can go wrong with AI trained super resolution:
hardmaru @hardmaru
Story breaks today of the first polygenically screened baby born, Aurea (pictured)- ironically- her Dad, biologist Rafal Smigrodzki decided to sign up for IVF using polygenic embryo screening after he read this piece, calling it Eugenics 2.0.
Antonio Regalado @antonioregalado
^ thread
One popular argument goes as follows:
“We are long-term investors. Volatility doesn’t matter to our portfolio.”
This is an appealing idea.
(thread)
Simple Example: Start with $1 billion of equities and suffer a 20% drawdown, the equity exposure falls to
$800 million. If equities turn around and rally 20%, the portfolio will make only $160 million, not the full
$200 million you lost.
As a result, if tail risk hedges are added to a long-term, regularly rebalanced portfolio, they can cushion
drawdowns and mitigate the mechanical reduction of risk asset exposure during times of stress.
The ability of music to contextually influence attitudes & emotions is actually nuts and terrifying, I'm surprised people aren't more paranoid of its manipulative powers. You randomly hear a song & emotions involuntarily swell just because the right sequence of notes were played.
A story that haunts me about 9/11 is how all but 13 of Morgan Stanley's approximately 2,700 employees made it out of the South Tower alive because their head of security over rode the NYC Port Authority's instructions and started evacuating immediately.
^ thread
North Korea now has the tech capability for long range cruise missiles.
A poor country of 25 million under severe international sanctions nevertheless has the human capital to produce a wide range of missiles (submarine-launched, road mobile, cruise, etc).
Ankit Panda @nktpnd
The official download for British crime data is prefaced with a caution against drawing the obvious conclusion from it.
^ apparently the number of homicides per year in the UK tripled since 1960???? This is insane???????? (population increased ~20% and became much older)
I think about this figure from @DARPA a lot
F-16 concept funding was awarded in 1969, prototype award in 1972, first flight in 1974
In contrast, the F-22 and F-35 took roughly 20 yrs to develop
#AvGeek
Source: almendron.com/tribuna/wp-con…
and HT to J. Schmisseur @UT_Space_Inst