waves lighter
Jun. 19th, 2006 08:02 amscience!

...Let's begin with our source: like too many journalistic forays into "science" we take an interesting or provocative study and clothe it in the panoply of modern science with a choice phrase or two; here it's "the Granger Causality Test". Our first objection is that Morin had an obligation to explain what the Granger Causality Test is, not what someone planned to do with it, unless what they planned to do with it offered some proof in the success or failure of application. If I'm testing whether dropping a baseball onto my sister's head from the top of the swingset will make her yell for Mom (like that first kiss, you never lose the warm feeling you got from your first scientific foray), reporting my findings is sufficient. If my purpose is to determine whether news reports "Granger cause" terrorist attacks, then regardless of the results I need to know what the hell "Granger-cause" means...