The authors of the flood narrative (Genesis 6-9) refer to a deluge that kills all but eight people (Noah, his wife, their three sons and their wives) and the paired animals aboard the ark. Your continued reference to other members of Noah's family who escape the flood (your uncritical appeal to the genealogy found in chapter 4) is one misrepresentation of how composite authorship works, if you even acknowledge this basic fact about the origin of the Pentateuch. Another is your mistaken claim that the fifteen cubits refers to a depth measured from ground zero rather than the depth of water under which the mountains were submerged.So what misinterpretation are you referring to, given that the bible clearly says that the flood which drowned most of Noah's family was only 15 cubits high?
I'm not asking you to believe them, but I am asking you to acknowledge that they believed such things about their world and to therefore interpret their writings from that perspective and not from that of a 21st-century geologist. To do anything but what I've outlined will result in distorted interpretations (like a local flood theory).And why on Earth would I believe what the biblical writers wrote, that the Earth is a flat immoveable disc with ends and corners and foundations (eg Matt 4:8 Isaiah 40:22 Job 38:15 Psalm 104:5), and that the universe is a geocentric dome-shaped tent attached to the circle of the horizon (eg Isaiah 40:22 Eccl 1:5)?
That the authors of Genesis 6-9 wrote about a flood that inundated the entire known world is not a theory, it is the plain reading of the texts in question. All your criticisms concern the impossibility of a global flood, which is entirely irrelevant to a correct interpretation of these ancient texts...I'm still waiting for you to address my criticisms of your global flood theory.