I'm not saying "in any given race." I'm imagining there's some way to measure performance more generally. In Thomas' case, looking at his record in the men's division would be informative.
But of course you're probably not on the men's team at all if you can't beat the performance of women in most sports, and that's not an option where someone has no record in the men's division.
Glad this isn't my job.
Yes.
And ain't it interesting how much blame and - frankly - offensiveness is being directed at Thomas personally by the usual cast of characters on this toxic little thread?
Rather than taking a step back, for example, and applying their fierce intellect along the following kinds of lines:
1) Most of the world's sports administration/organisation bodies have only extremely recent experience of transgender participation, and they have until recently (and even now in most instances) little or no actual empirical evidence upon which to take policy decisions in this area.
2) In the absence of proper, robust, empirical evidence, most sports administration bodies have, up until recently, been obliged to err on the side of allowing transgender people to participate in sports under their trans gender (unless there are reasonable grounds to believe that the health and safety of other competitors might be at risk) - this is a function of anti-discrimination laws and general transgender rights/recognitions/protections already enshrined in law in many progressive jurisdictions.
Therefore
3) In this period of transition (no pun intended), it's always been near-inevitable that transgender people will have been permitted to compete under their trans gender.
However
4) As the prior tiny trickle of high-performance sportspeople starts to grow into the tens and then the hundreds, there will - by definition - be an ever-improving dataset of empirical evidence as to the inherent relative advantages etc of transgender people (specifically, of course, transwomen* in most instances).
This will
5) Allow sports administrators/organisers to use that empirical evidence (not just "guesswork" and "well it stands to reason that...") to frame the issue correctly, accurately and justly.
And in my personal opinion, this will
6) Lead, within just the next few years or so, to transwomen in particular being (justly) excluded - on a proper, evidence-based analysis - from pretty much all sports at an elite and sub-elite level** where a performance advantage may be gained from superior musculoskeletal physique and/or a strong cardiovascular system.
7) Therefore (in my humble opinion alone, of course), what sensible, rational people should be doing right now is a) absolutely being vociferous if there are situations of genuine risk to the safety of any competitors; b) making sure that the relevant sports administration bodies are taking all reasonable steps to obtain robust empirical evidence in as timely a manner as possible, regarding performance deficit/advantages; c) making sure that those sports administrations take proportionate and fair decisions based upon that evidence, and that they are properly held to account for their decisions (and their decision-making processes); and d) being less disgustingly unpleasant and vindictive towards transgender athletes themselves in the meantime. Y'know. A mixture of logic, reason, and basic human decency/kindness. In my opinion. Only. Of course.
* Although (and I imagine it's not something that goes through the minds of many anti-transgender folk...) it's fairly easy to conceive of a situation where a transman is prevented from playing in the front row of a men's rugby union team, owing to the potential danger to his safety arising from his relatively weaker musculoskeletal physique and cardiovascular system.
** Note though that I believe transgender people (transwomen in particular)
will in the long run be allowed to compete in their trans gender category in all sports at levels below elite and sub-elite levels (eg high-school teams, local district teams/clubs). And I believe that this too will be just and fair, and proportionate. The caveat is still that exceptions will need to be made where there are reasonable grounds to believe that the health and safety of any competitors might consequently be put at risk.