It's a common theory that our experiences of sex are becoming skewed through porn.
That is a common theory among Chinese readers, and it's understandable, given the sudden profusion of reports, and the way they tend to damage one faction or another.
It is a common theory that the architecture of trabecular bone follows the principal stress trajectories, as suggested by Wolff's pioneering studies of the proximal femur.
There was a common theory around 2010 that Europe was "turning right" because, everywhere you looked, centre-right parties were suddenly winning elections.
Being a henge and stone circle site, astronomical alignments are a common theory to explain the positioning of the stones at Stanton Drew.
The effects of whisky was a common theory amongst the Indians, but Wooden Leg believed the prayers of medicine men to have been the cause.
That's not where the dance/hip-hop cultural crossover ends – There's a common theory that hip hop's embrace of MDMA has been part of the reason it has become thematically less aggressive over the past decade.
It is a common theory that spirits disrupt this field in such a way that you can tell one is present by higher than normal readings with this meter.
Part of what concerns disability rights advocates is the questionable relation between the existence of certain impairments or bodily anomalies and the availability of equality of opportunity or well-being (Silvers, Wasserman, and Mahowald 1998; Amundson 2005; Asch and Wasserman 2005) that seems to be a common presumption in liberal eugenics theories.
