@thebkc Olympic regulations for inclusion of transwomen in female categories state that the *overriding* objective is the *guarantee* of fair competition, and that restrictions are permitted to secure that aim.
@thebkc The UK Equality Act 2010 permits sex discrimination, regardless of the gender reassignment characteristic (with or without a GRC), if it is necessary to do so to secure fair competition or the safety of competitors.
@thebkc The power gap between a male and female punch is 162%. That is, males can punch 2.6 times harder than females. It’s the biggest performance gap I’ve found to date.
@thebkc Reviews of muscle data in transwomen suppressing testosterone show that, even in untrained and non-training transwomen, loss of mass/strength is small, and wholly insufficient to close the baseline male-female gap.
@thebkc You regulate a full contact sport where serious injury is an inherent risk.

You have an ethical duty to protect your female athletes from avoidable risk of harm.
@thebkc My other thoughts on boxing (which overlap with kickboxing).

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More from @FondOfBeetles

3 May
On the left is Michael Jordan.

On the right is Tyrone "Muggsy" Bogues, the shortest NBA player ever.
I recently wrote about the importance of height in basketball, where I suggested that short players still had a competitive shot if they had some excellent skills/characteristics that compensated for lack of height.

Bogues had what we might consider "excellent compensatory skills".

The guy was absolutely lightning quick - he could turn and get away from anyone.

Watch this video.
Read 6 tweets
30 Apr
Interesting from Eric Vilain here, who works with various sports feds and advocates for inclusion of transowmen in female cats.

“It is not about making everybody biologically equal, and I think that is a common misconception when we start talking about transgender athletes."
“People want transgender [females] to be physiologically identical to [born] females, and if they’re not, it’s unfair.

That is not possible.”
Dr. Vilain referenced the structure of the pelvis and the mass of certain muscle groups as anatomical differences between the male and female body that will always be somewhat different.

But achieving total equality is not the point, Dr. Vilain said.
Read 5 tweets
22 Apr
Dear @RichardDawkins

While you gently awake, women are being cancelled, deplatformed, sanctioned.

Discuss.
While you gently awake, legislators in Texas are boldly claiming, despite not quite believing, there are six - precisely six - sexes in humans.

People who make laws are using TikTok for their science info.

Your thoughts?
While you gently awake, I am being questioned by my institute about my use of the words ‘male’ and ‘female’.

Apparently, that’s rude.

Discuss.
Read 8 tweets
19 Apr
Homo = same.
Zygote = of the zygote (fertilised egg).

It means that, for a given DNA sequence, you have the same information on both copies of it. As each copy came from a different parent, it means your parents had the same information as each other.
A common cause is related parents.

If you analyse someone’s entire DNA set, you can get a feel for exactly *how closely related* the parents were. The more events where the sequence is the same in both copies = higher degree of relatedness.
For some genetic diseases, you need two ‘bad’ copies of DNA to have the disease. The chances of you having the disease are therefore higher if your parents are related.
Read 6 tweets
17 Apr
A perfect example of the muddled thinking regarding testosterone, advantage and sports categorisation.

‘T means better performance. It’s debatable whether that’s a sports advantage.’

🤪
There are two concepts of ‘advantage’ used in the wider discussion. I think of them as Start and Finish Line positions.
Read 19 tweets
10 Apr
This is an excellent analysis of an article typical of the genre seeking to deny the material reality of sex. @lecanardnoir
This photo is key to Andy’s analysis.

“But which of them is male and which is female? They look different with different wing markings, but unless you are a lepidopterist, it is unlikely you know – and if this was a new species no-one would know.”
“So, our knowledge of the sexes of each individual is non-existent. We do however know that one will be male and the other female.”
Read 7 tweets

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