The details of how big the flood was, what size region, etc. are very much a
red herring (sorry, I love using color occasionally for a humor effect), but I only know that from chasing that squirrel up a tree a few times in my own youth, thinking I could fix someone's lack of understanding of scale and physics.
Thing is, it hardly matters (sorry about 90% of people that argue on this one...), because the very account we are talking about, which is from Genesis chapter 6, 7 clearly
isn't at all about how big the flood is much, though of course obviously it seems it stretches out to all their known world, all the local hills they thought of as 'mountains', but that's a triviality.
Instead, the only meaning in the story is the far more important radical, astounding claim or information about the situation of the culture. That is if a person reads and notices.
Most do not.
The astounding claimed situation:
Genesis 6:5 Then the LORD saw that the wickedness of man was great upon the earth, and that every inclination of the thoughts of his heart was altogether evil all the time.
Which has words that we know are
not true
today.... "every", "only" or "altogether", "all the time"
!
Meaning, if one noticed the words, that they had arrived into what would seem to be at least a regional (involving many 'nations' (small kingdoms one might suppose, or small warlord territories, but all within many days of travel it would seem)) of...
...
zero love, and zero compassion.
Not even sometimes. Not normal life. Not some love, some violence. No -- no love. Zero love.
So, only violence, murder, pillage, rape, theft. Nothing but these.
Could that happen?
Well, we know such a thing can happen to at least tens of thousands or hundreds of thousands of people in a nation, temporarily, or something very close, such as when there is a sudden tipping into genocide, like happened in Rwanda, or Cambodia.
But this wording seems....
more, doesn't it?
Could it happen?
Only in my more recent years, with a deeper understanding of human nature, do I realize that yes, it could happen.
When such a regional culture of only-violence became so ingrained, what could change it?