Trade involves the transfer of goods or services from one person or entity to another, often in exchange for money. A system or network that allows trade is called a market.
The product of mental labor — science — always stands far below its value, because the labor-time necessary to reproduce it has no relation at all to the labor-time required for its original production.
Karl Marx Addenda, "Relative and Absolute Surplus Value" in Economic Manuscripts (1861–63).
A significant portion of available oil remains unexploited after primary production at drilling sites. Novel technology suitable for use on floating platforms will aid in application of proven methods to release much of the oil trapped in the ground by physical forces.
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