No. It’s all bullshit. I bought a traditional Japanese futon. My back has never felt better, posture improved. Its just technically ‘harder’. Western mattresses sink and sag and fuck your back and neck up, and then you have buy a new one. They’re environmentally bad, bad for your wallet, bad for your back, and they take up loads of space. Futons can be folded away easily in a cupboard. Hammocks are another potential solution.
Big River River. This is like in the UK when the Romans arrived and asked for the names of Rivers, they were told Avon. But that’s just the Celtic word for river. So we have 5 separate river Avons and they are all called River River.