This article aims at a critical reevaluation of the trading zone concept. It starts from a case study of the Faraday–Whewell collaboration in coming to terms with electrolysis experiments. The case is supposed to be an example of a trade zone of science/philosophy interaction though it demonstrates the unequal nature of the “trade.” This requires the analysis to log in some details concerning Galison’s metaphor of trading zones, which reveals its market-oriented connotations. The following criticism of the market metaphor for (...) science applies a revised version of Boris Hessen’s argument against misinterpretation of technology by some British scientists. A closer look at the ancient trade rituals in Marcel Mauss’ seminal work enables discovering another cultural pattern for describing scientific communication as opposed to trade—gift. This helps picture science as a distribution of social roles and statuses and uncovers the normative and value dimension of gift zones language. (shrink)