Reference to Sherlock Holmes story, where the evidence of the case revolved around a dog NOT barking when a horse was stolen from the stable: it should have under normal circumstances.
We have a similar situation here: the flood was supposedly a catastrophic event that tore up the landscape and leveled mountains and moved continents.
But by the time that the flood waters were dissipating there was calm sunny skies (with rainbows eh?).
When flood waters subside they leave "bathtub rings" of floating debris, sediments and the like. When tides subside they leave patterns in the shore of where the last waves washed at each level as it went down.
This pattern would show up repeated on any continent at the same levels of the mountains, consistently showing levels of subsidence.
This is not the case on any continent: there are only patterns of isolated areas where this is even remotely consistent, and many more where the evidence is tilted or even turned over.
Creationists like to point to all the different flood myths as evidence of a global flood .... Here's the catch: not
one of these other myths, NOR the noah flood myth, talk about any noticeable tectonic activity that would be enough to raise a hillside, to say nothing of turning hillsides over, moving continents and piling up mountains. Nor is there evidence of such activity within the last 4-5000 years sufficient to cause the geological formations we see and disrupt the evidence of subsidence that would be consistent with a flood.
That dog didn't bark.
Enjoy.