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  1. Drift is a specific noise process in timekeeping. Time dilation is not drift. The frequency shift is the source of the time dilation (you integrate the frequency shift to get it)
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  2. “hardly” is a matter of the precision of the clocks. The value given here is 3 x 10^-10, which is pretty big in atomic clock terms. A millisecond per year (3.15 x 10^7 sec) https://www.newscientist.com/article/2085599-earths-core-is-two-and-a-half-years-younger-than-its-crust/
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  3. That would only be applicable if you were shrinking the Earth in order to keep all of its mass contained within a sphere with a radius of r as r decreased. As you move towards the center of the Earth this is not the case, as the amount of material within r decreases as you do so and thus M is not a constant throughout the trip. So while at the surface of the Earth Gravitational potential is -GME/rE, at the center, it is -1.5GME/rE Thus the difference in gravitational potential between the surface of the Earth and its center is smaller than that between the surface and an infinite distance, and so would be the time dilation factor difference.
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  4. No, this is incorrect. Because you need to keep all the clocks synchronized, and this is done via a ground station, so the clocks need to run at the same rate as UTC(USNO), which is the source of GPS time A nanosecond of error is a foot in positioning
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  5. In context of this threads topic, the only thing making life unbearable to trans people is their fellow humans and the hate (and refusal to accept) those fellow humans so constantly direct toward them, despite the complete lack of any physical harm a trans person authentically sharing who they are causes to those around them.
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  6. No, that is not true, there would be hardly any difference in the 2 clocks rates. What fuss are you referring too?
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  7. People often claim there are two binary sexes, and then further try to cloak themselves in the respect of biological science when they do. In many instances, these claims are a direct conscious attempt to dismiss and dehumanize the validity of other citizens who are transsexual, to diminish and ostracize those who feel they were wrongly assigned an identity at birth that fails to match who they are today. Those who are simply being open and honest about who they are. People, including myself, are wrong every single day. It happens, but presenting information from biology regarding the approximately 10 other accepted “sexes” in science to those asserting “biology only allows two sexes!” ought to cause any rational honest person to do some rethinking and reevaluation of their stance, since the claims of binary categories is self-evidently false. There are more than two sexes in biology and this we’ve known for decades. Ignoring a spectrum like an ostrich with head in sand doesn’t magically make that spectrum invalid. Rather, it makes the claimant a liar or a fool when repeated corrections go unheeded. You identify as Italian. Maybe we ought to explore a cure or treatment for that? You identify as Canadian. Shall we push for a cure for that, too? I believe you’re an engineer, or a corporate employee. We likely will need to institutionalize you for fixing that, eh? If not, one must ask why your identities are any more valid or acceptable than someone’s trans identity. Usually bigotry is involved, or at least ignorance… which is thankfully fixable with open honest feedback like that which you appear to decry above. Tl;dr. It’s not a median outcome, but why frame it as an abnormality? Red hair is rare too, but that’s not abnormal. Words and framing matter.
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  8. First thing to ask is 'Is the behaviour pathological to the subject or to those around them. If not, then in the long term, it probably can be accepted as 'normal' behaviour , or at least looked into for potential recategorisation. A lot of the pathology is a result of how such people are received. The social pathology towards these people is caused by lack of acceptance, rather than anything intrinsically wrong with them. If it's not harmful it is another evolutionary arrow to put in our quiver that can ensure our continuity as a species, and indeed all species.
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