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Nov 16, 2021 11 tweets 4 min read Read on X
🧵
Today IOC released a new Framework on Fairness, Inclusion & Non-discrimination on the basis of gender identity & sex variations
olympics.com/ioc/news/ioc-r…

This offers a sharp rebuke to World Athletics "Semenya Rule" barring certain women from competition without medicating Image
The IOC prioritizes the prevention of harm

The World Medical Association @medwma opposes the World Athletics "Semenya Rule" because of its harm to athletes

No more need be said on this topic Image
IOC comes out against sex testing of athletes - Good

Yet the WADA Anti-Doping Code was recently modified in light of the "Semenya Rule" to allow drug tests to be used for gender verification

This is wrong Image
IOC says athletes should be prevented from claiming a gender identity "different from the one consistently are persistently used"

So is it OK for a sport federation to classify an athlete's gender identity to be different than the one they "consistently and persistently use"?
🤷‍♂️ Image
IOC says no athlete should be excluded based on a perceived advantage

This undercuts the entire CAS judgment against Semenya, which was grounded only in a perceived advantage (and earlier rejected as such in Chand CAS judgment) Image
And here is the kicker
IOC says "any restrictions arising from eligibility criteria should be based on robust and peer-reviewed research"

The "Semenya Rule" is based on research admitted to be flawed by WA & putatively (but not) fixed in a non-peer-reviewed letter

Wow IOC Image
But wait there's more

IOC is against medically unnecessary procedures or treatment to meet eligibility criteria

The WA "Semenya Rule" is centered on medically unnecessary procedures to meet eligibility criteria

IOC against invasive examinations
WA requires them

Again, wow IOC Image
IOC supports an athlete's right to privacy

But as we saw in Tokyo the WA "Semenya Rule" cannot by design protect privacy, in fact the opposite as we saw in headlines around the world Image
IOC calls for informed consent when collecting data used for sex or gender testing

But the linkage of sex testing with anti-doping makes this currently impossible Image
IOC calls for periodic review of eligibility criteria

Since the "Semenya Rule" went into effect there has been no such review, despite the research underpinning the rule being corrected by the journal that published it & WA admitting that it was misleading Image
Bottom line:

The new IOC Framework provides about a dozen reasons to rethink the World Athletics "Semenya Rule" (as if we needed even more)

This is a significant development

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More from @RogerPielkeJr

Aug 7
🧵The US National Climate Assessment has been a politiczed mess from the start due to its institutional design, which places it in the White House

The NCA proved too tempting for both Ds and Rs to put a thumb on the scale

Links at end of thread . . .
The idea it was perfect under Democrats, as @afreedma & other advocacy journos suggest, is simply wrong

The most recent NCA was totally capture by interest groups and companies that would benefit from the report - UCS, TNC, EDF, CAP, Stripe etc

Below just a few of its authors Image
@afreedma The head of the NCA5 stated publicly that she would never cite our work in the assessment, even though our work is by far the most cited research on economic losses in the US associated with floods, hurricanes, tornadoes

Here is how the NCA handled a reviewer comment Image
Read 7 tweets
Jul 31
🧵Let's take a quick look at the implications of the regulations that have followed from the 2009 EPA endangerment finding

According to @C2ES_org the 2021 GHG standards for light vehicles would reduce projected CO2 emissions by a cumulative 3.1 billion tons to 2050
c2es.org/content/regula…Image
Over the next 25 years the world would emit 925 gigatons of CO2 assuming constant 2025 emissions and ~690Gt assuming emissions are cut in half by 2050

That means that the projected impact of the regulations would reduce global emissions by 0.0003% (constant) & 0.0004% (halved)
The idea that CO2 can be regulated out of the economy is flawed

If the purpose of CO2 regulation is to create a shadow carbon tax, then it is a horribly inefficent way to do that

Once again, all this leads us back to Congress and the need for smart energy & climate policy
Read 4 tweets
Jan 11
🧵
The percentage of a percentage trick is increasingly common & leads to massive confusion

Here a undetectable difference of 0.01 events per year per decade is presented as the difference between a 31% and 66.4% increase (in the *likelihood* of the event, not the event itself) Image
The resulting confusion is perfectly predictable

Here is a reporter (NPR) explaining completely incorrectly:
"The phenomenon has grown up to 66% since the mid-20th century"

False Image
Also, the numbers in the text and figure do not appear to match up
I asked Swain about this over at BlooSkeye Image
Read 4 tweets
Dec 22, 2024
The new hurricane damage time series trick

Step 1: create Frankenstein dataset w/ an increasing trend where there was not an increasing trend before

Step 2: Attribute the increasing trend to climate change

Step 3: Use Frankenstein dataset to impeach other research w/ no trend Image
The reason that the blue and red numbers are different is that they are different measures of hurricane losses

E.g., the red numbers include inland NFIP damage
The blue numbers do not, on purpose, because NFIP only started in 1968

They are apples and oranges
Now 3 peer-reviewed papers (PNAS, JAMC, BAMS) make this most basic of errors by replacing and splicing NOAA BDD to the MWR/NHC time series

Predictably all three papers find an increasing trend in normalized hurricane damage even though landfalling hurricanes are not increasing Image
Read 6 tweets
Dec 21, 2024
A Frankenstein dataset results from splicing together two time series found online

Below is an example for US hurricane damage 1900-2017
Data for 1980-2017 was replaced with a different time series in the green box
Upwards trend results (red ---)

Claim: Due to climate change! Image
The errors here are so obvious and consequential that it is baffling that the community does not quickly correct course

Read about it here
Is my analysis flawed?
osf.io/preprints/osf/…
The IPCC AR6 cited a paper misusing the Frankenstein hurricane loss dataset to suggest that NOAA's gold standard hurricane "best track" dataset may be flawed

JFC - Using flawed economic loss data to suggest that direct measurements of hurricanes are in error! Image
Read 6 tweets
Nov 2, 2024
We’ve reached the point where an IPCC author is openly rejecting the conclusions of the IPCC out of concern over how their political opposition is correctly interpreting the AR6

The integrity of the IPCC on extreme events is now under attack
The IPCC explains that a trend in a particular variable is DETECTED if it is outside internal variability and judged with >90% likelihood

For most (not all) metrics of extreme weather detection has not been achieved

That’s not me saying that, but IPCC AR6 Image
The IPCC also assesses that for most (but not all) metrics of extreme weather the signal of a change in climate will not emerge from internal variability with high confidence (ie, >90%) by 2050 or 2100, even assuming the most extreme changes under RCP8.5 Image
Read 6 tweets

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