Oversimplification

This could also read:  PE hurts out kids;  small desks hurt our kids; fluorescent lights hurt our kids; paper cuts hurt our kids .  . . .

The causation fallacies known as oversimplification and exaggeration occur whenever the series of actual causes for an event are either reduced or multiplied to the point where there is no longer a genuine, causal connection between the alleged causes and the actual effect. In other words, multiple causes are reduced to just one or a few (oversimplification) or a couple of causes are multiplied into many (exaggeration).

Also known as the "reductive fallacy" because it involves reducing the number of causes, oversimplification seems to occur more often, perhaps because there are so many ostensibly good reasons for simplifying things. Well-intentioned writers and speakers can readily fall into the trap of oversimplification if they are not careful.

One impetus for simplification is the basic advice given to all who want to improve their writing style: don't get bogged down in details. Good writing needs to be clear and precise, thus helping people to understand an issue rather than confusing them even more. In the process, however, a writer can easily leave out too many details, omitting critical information which needs to be included.

Example:  The nation's current lack of moral standards was caused by the poor example set by Bill Clinton when he was president.  Granted, Clinton may not have set the best example imaginable, but it isn't reasonable to argue that his example is responsible for the morality of the entire nation. Once again, there is a wide variety of different factors which can influence the morality of individuals and groups.