The problem is we don't know how to value human labour. If I'm a truck driver delivering water to a remote location, how much should I be paid per hour? Value is subjective and only the buyer can decide how much I should be paid. If they decide the truck driver's labour is only worth $10 per hour, there may be no truck driver willing to deliver it.
I don't agree. It's subjective but it's paid. Also, it's not always that the buyer decides the price of labour. Most of the times, it's the seller who decides. But generally it's decided by reaching an agreement.
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