We do not want to be exploited by Satan, for we are not ignorant of his schemes (2 Corinthians 2:11).
The verb “exploit” means to take advantage of, defraud, or cheat. This kind of problem was sometimes encountered in the marketplace, and one of the measures taken to counteract it was the installation of standard measuring tables in the public square. The measuring table shown here, known as a mensa ponderaria, was used to provide a standard unit of measurement against which the measurement of dealers could be gauged.