Is there a field or term which can be used to describe conjecture on the notion that:
The validity of an idea is related to the number of proponents/opponents of the idea.
Such a field would concern (or, term would describe), the validity of statements such as:
I find it hard to agree with an idea which has so little support.
If it were false, then why do so many people believe it.
I have also asked a related question: