And while your're at it, I suggest taking the Bayesian approach for the criterion of a scientific method, where falsification is a particular (and simplified) case of Bayesian reasoning.
A great introduction may be found at [0], if one is already well versed in Bayes theorom, then an excerpt [1] should be enough.
[0] http://www.yudkowsky.net/rational/bayes
[1] http://www.soest.hawaii.edu/oceanography/researchers/francoi...