[scripter]

Bailey and Pillard used invalid sampling very much similar to the invalid Kinsey sampling. This method of sampling used by Bailey and Pillard is commonly referred to as the snowball effect. If you aren't familiar with this term (which I assumed some lurkers were not) then I could understand why you didn't get the reference. The example was written in a way I thought would clarify their error.

[LtdGovt]

Indeed, I was not familiar with the term you used. I'll look into this BP survey, and the things that scientists have said about it, some day. Not to worry, I'm sure that this will not be the last discussion we'll ever have.