mike the wiz writes:
Evolution isn't true by assumption...
Correct.
...or consensus,...
Also correct. Evolution isn't true because a scientific consensus formed around it. Rather, a scientific consensus formed around it because the overwhelming supporting evidence convinces almost all scientists that it is likely true.
...but by a sound syllogism that can't be broken, and there is no such syllogism because evolution is inductive and tenuous and limited as science in that it's historical.
Nonsense.
But "Is evolution true?" is not this thread's topic. Bookworm asked if there exist reasonable scenarios for the evolution of flight, the implication being that no such scenarios exist and therefore evolution can't be true. But such scenarios do exist, and of course these scenarios assume evolution is true because Bookworms question boils down to, "If evolution is true, then how could flight have ever evolved?"
But the fact that scenarios for the evolution of flight exist is not why evolution is an accepted theory within science. The material evidence for evolution comes from other sources. Flight evolution scenarios are merely consistent with evolution, not evidence for it.
--Percy