The possibility of an Apple (AAPL 2.25%) iWatch continues to tickle the imagination of many news reporters and bloggers. But is it ever a good idea to base investing decisions on hype? Not according to Motley Fool contributor Daniel Sparks, who reminds investors that this is not the first time the media has gotten unreasonably excited over a non-existent Apple product. In the video below, he directs the attention of potential investors to an actual product lines, like the iPhone and the iPad.