In advertising in particular, science is used as a sort of theme instead of an argument. This avoids making claims that have to be backed up (which they may not be able to). For example, a particular headache advert used a graph as the background for the poster. However, while the large yellow line was undoubtedly going upwards in a sort of ramp shape, the graph had no labels.

There was no indication of what the changing variable was - even whether it was related to headaches. Resistor response to voltage, black body radiation, speed of a car on a journey from Land's end to Penzance? Who knows.