Aside from things like false legs and injury bringing your hips and ankles together like that is a physical impossibility; that doesn't provide a good analogue. People sit with straight legs too, but if you test by asking people to sit on a chair it will show everyone sits with bent knees, where in fact lots of people sit on the floor, beach, or bed (say) with straight legs. FWIW I sit on a chair with straight legs, on top of my computer tower.
If you take a sample of 35 people in China you can with a reasonable confidence level say all people are Chinese, or perhaps a very small proportion aren't, depends how lucky you get. It's wrong of course, despite Chinese being the majority (17% according to Wikipedia).
It's fine as a preliminary, but it doesn't show anything useful yet other than the need to perform further study IMO.
A report on this should say something like "viability study suggests sitting and brain changes are related but doesn't provide enough confidence as yet". Which it sorta does, from this section on:
>"This study does not prove that too much sitting causes thinner brain structures, but instead that more hours spent sitting are associated with thinner regions, researchers said."
But either ScienceDaily or UCLA have not lead with that information, matching the current style.
If you take a sample of 35 people in China you can with a reasonable confidence level say all people are Chinese, or perhaps a very small proportion aren't, depends how lucky you get. It's wrong of course, despite Chinese being the majority (17% according to Wikipedia).
It's fine as a preliminary, but it doesn't show anything useful yet other than the need to perform further study IMO.
A report on this should say something like "viability study suggests sitting and brain changes are related but doesn't provide enough confidence as yet". Which it sorta does, from this section on:
>"This study does not prove that too much sitting causes thinner brain structures, but instead that more hours spent sitting are associated with thinner regions, researchers said."
But either ScienceDaily or UCLA have not lead with that information, matching the current style.