> rename variables to make them represent some economic quantities You cannot trivialize this step. Most people's job in data analysis is basically this. Figur

> rename variables to make them represent some economic quantities You cannot trivialize this step. Most people's job in data analysis is basically this. Figuring out what quantity fits where in the formula _is_ the research. edit: To make it clear, it would have been fine if here model explained something using trapezoidal formula. But she seems to be claiming the formula, not a model.