Or… Correlation implies causality. This is a logical fallacy. Keep this in mind when analyzing data. There are numerous cases of how people use this logical fallacy nowadays (most typically in newspapers). For example, the following graph
shows a correlation between global warming and the number of remaining pirates. But this does not imply (of course), any causality between them.
By the way, this graph appears in a Bobby Henderson’s clever parody of the type of arguments in Intelligent Design. ...