"Falsifiability is not the definitive criteria in identifying science, but it is important. Heaven's Gate's ideas were examples of blind religion, not organic spirituality and are therefore a poor example that renders your argument fallacious. Understand that I do not use the words spirituality and religion as synonyms. I wash my ass and brush my teeth religiously, which is good for hygiene. Conversely, religious practices in the area of spirituality are often harmful to humanity." - Mattb4rd