A works safety report states: 'Injuries from falls doubled last year, from one to two, while injuries from cuts fell by 5 in every hundred, from 400 to 380. Falls are therefore now the chief safety concern of this works.' The report's reasoning is most open to criticism because it

A doubling of one and a fall of five in every hundred are movements, and the report has read the movements as though they measured the trouble. One extra fall against twenty fewer cuts leaves cuts injuring one hundred and ninety times as many workers as falls do. How many are employed would matter if a rate were being claimed, and none is; who keeps the figures is not in question, since the report's error survives whoever keeps them; and the conclusion is about the works as it stands now, not about next year.