There is a base level scaffolding here called A. A is based on shaky assumptions and essentially a choice to 'believe' in something, and nothing else. People standing on A refuse to look below it, or question why/how it came about, but instead they build these fabulous castles and really intricate structures, the supports and beams for which they easily carve out of A -- since nobody is going to think about how A came to be, or what supports it, we can just have it give us more pillars and beams for the next floor of the castle. Let's build as many floors, as we want.

I do not see this as rigour, or worthy of any merit.