If a belief predicts results identical to its own negation (that is, does not correlate with results at all), it is useless and can be safely culled by Occam's Razor.

I believe that of the last 100 people I've friended on Facebook, at least one was conceived with a sperm cell originating from their father's left testicle and at least one was conceived with a sperm cell originating from their father's right testicle.

This belief does not correlate with results, and I agree it's useless, but I don't think it “can be safely culled by Occam's Razor”.