Smug, to be sure. But hey...lets do what you imply and say no other allowed then. You know, just like the flat earth types long ago. No other theories allowed except our conventional wisdom, un proven to its conclusion, but what we claim is best. We will explore NO other alternatives because as Lothar of the Hill People rightly said..."Son, thats a great idea...but it is a new idea, therefore it must be feared and rejected."