You mean, until proved wrong, assume inerrancy, no matter how ludicrous? It's too much like a criminal saying he's innocent unless caught red handed on tape in front of a live audience.
Difficult to see how that rule produces anything "sound".
I didn't say anything about inerrancy. My point was how to properly read the bible. Apparently some people will read God did this or God did that and saym "Oh that's just a parable", totally without any textual evidence. So again I ask what textual evidence is there of Genesis being an allegory ?