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).
By colliding heavy ions with free quarks, physicists hope to recreate the earliest moments of our Universe just after the Big Bang. In the aftermath of these heavy-ion collisions, jets coming from bottom quarks have been identified for the first time.
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