Historian Herbert Gutman and others have rejected several of Fogel and Engerman conclusions task on variety of fronts. Gutman argued they relied on evidence from a single, unrepresentative plantation, and also noted the authors were extremely careless in their math, and often used the wrong measurement to estimate the harshness of slavery (for example, estimating the number of slaves whipped rather than how often each slave was whipped). Fogel and Engerman later acknowledged these criticisms in a later edition. In Slavery and the Numbers Game, Gutman argued that Fogel and Engerman also routinely ignored better, readily-available data. Gutman roundly criticized Fogel and Engerman on a host of other claims as well, including the lack of evidence for systematic and regular rewards and a failure to consider the effect public whipping would have on other slaves.