Barry lists the many attributes scientists must possess: “passion, patience, creativity, self-sufficiency, and courage.” By providing this lengthy list, Barry demonstrates the difficulty of scientific research. He proves that scientific research is not designed for just anyone. He alludes to a famous scientist, Claude Bernard, and references Bernard’s idea that “[s]cience teaches us to doubt.” In doing so, Barry circles back to the uncertainty involved in scientific research and cites a well known scientist to increase his credibility. He describes the work of scientists as so fragile that it can “break apart upon the sharp edge of a single laboratory finding,” conveying to the reader just how tenuous scientific work can be. In emphasizing the fragility of science, Barry reinforces the risky nature of research. He implements another allusion to the well known scientist Albert Einstein and his method of doubting all of his theories until tested. This use of a well-known figure improves Barry’s credibility in his characterization of scientific research as