> Also, the image of early hominids running pell-mell after game

Is not the image of endurance hunting. It's running at a steady, sustainable pace - a jog, really - that is not sustainable for the prey animal, which eventually cannot run more.

It's advantageous to be able to identify less fit mates, but it's advantageous to look like a fit mate whether you are or not. It's difficult to have honest signals which aren't difficult to fake; you can't stot unless you're fit, you can't make an alarm call only when there are predators around unless you can detect the predator. If grey hair is energetically no more or less favourable than coloured hair then it would be difficult for it to spread as an honest signal of unfitness because it could just as easily be faked.

It seems more likely that grey hair is a signal for something else - age and hence some kind of experience/authority, or a side-effect of something else. Testosterone has a lot of effects, it probably has some that weren't specifically selected for.

There's a lot of wrong information in this thread, and I wonder if some of it is due to confusion about what sinuses are. They are not your nostrils: when you have a stuffy nose that's, well, your nose. If you have sinus issues, that's a separate thing; they are basically hollow spaces in your facial bones. They are lined with epithelium which can become swollen, and they can fill with fluid - these are sinus problems, specifically.

I know nothing about whether any of these substances affects sinuses.

However, I do know that they do affect your nasal passages, so the top-voted comment which says they don't is wrong (even though it's talking about sinuses as well as the nose). Menthol in particular is vasoactive and, in the nose, it acts as a vasoconstrictor. (Presumably the cold receptors are acting as they would if they detected actual cold - but this is complicated. Read more here) Your stuffy nose is primarily the result of your nasal lining swelling. With the blood vessels constricted, the swelling decreases and more air can pass through your nose, so you can breathe more easily. This is why menthol is an active ingredient in some decongestants.

it's not like large numbers of 100-year-old houses in the places we're talking about have been destroyed (through natural processes - we're not talking about whether buildings can survive a bomb blast).

You can't have a survivorship bias if the vast majority of things from the population survived.

It's pretty hard to tell whether you're buying a high quality property, because the things which determine longevity are not obvious. Even if you could, house prices are so expensive that there is enormous pressure to build cheap, so you're unlikely to be able to find it readily. Hence you're not just paying for the actual cost of building a longer-lasting building, but also the cost of competing for a limited supply of them.

Even for the majority of people who don't read the TOS, the existence of that in the TOS becomes known because people talk about it.

The actual proposals are remarkably sensible: it amounts to a legal duty to uphold your own terms of service, no bans except as set out in the TOS, and right of appeal against bans. If you want to allow offensive speech on your platform then I think you should be allowed to, but if you say you aren't going to and then people sign up thinking they won't be exposed to it but actually are, that's an issue.