So far it appears that "irrefutable evidence" is what ever is provided, plus 1%. And we have irrefutable evidence that SoldierDad doesn't apply the same standard to other branches of science.
Irrefutable evidence that these "animals" are actually evolutionary changes instead of just distinctly different animals with similarities.
You need to define what you would consider to be 'Irrefutable evidence' for anyone to be able to say it's possible to provide such evidence.
So far it appears that "irrefutable evidence" is what ever is provided, plus 1%. And we have irrefutable evidence that SoldierDad doesn't apply the same standard to other branches of science.