Final answer:
The quote suggests that labor is the true measure of a commodity's value in exchange. However, this view is limited because it overlooks factors like demand and utility, and labor value can be obscured by differing skill levels and technological advancements.
Step-by-step explanation:
The quote implies that the value of a commodity for someone who does not intend to use it themselves but to exchange it, is determined by the amount of labor it can command in the market. It suggests that labor is the true measure of value for all commodities. However, this analogy can be problematic because it overlooks other factors that affect a commodity's exchangeable value, such as consumer demand, scarcity, and utility.
For instance, a highly demanded but low-labor commodity might have high exchange value. The quote does not account for this scenario. Additionally, as economies advance and diversify, labor value becomes less transparent due to varying skill levels, production efficiency, and the use of machinery, which impacts the estimated amount of labor intrinsic to a commodity.