Originally Posted by Big D
Ah. I see there's a fundamental misunderstanding about the nature of evolution, here. Evolution isn't about a new creature simply being born with a new organ or a new ability. It's an incredibly incremental process, dependent on miniscule mutations taking an effect over countless generations. One species can't simply "evolve" into another species in the space of a single generation. The 'mutations' we know as cancer and other deformities aren't part of the evolutionary process because they're radical, often actively harmful, mutations. Evolution involves tiny mutations, often of a single base in the DNA sequence.