Which is basically what the Forerunners do, go from something stated to be very similar to what a human looks like physically to many aesthetically different looking forms dependent on their rate through mutations(i think that's what it was called, to lazy to look it up), and depending on whether being 1st, 2nd, 3rd(was there any Forerunner stated as being a 4th form?) ,or ?4th? form, would look slightly different within the same rate.

Just looking at what humans have done with crops makes it plausible that one day we could guide our own evolution and improvement. Isn't it largely accepted that humans are already a huge abnormality in evolutionary terms because of our development of higher thought processes and a comparatively weak physical form in the animal kingdom.

This was definitely a fun read though... haven't seen this extensive of a debate on this forum in a long time. My simple opinion is while some things can be discredited from scientific laws that we have a fairly firm grasp of, humanity is more than likely far from being an intellectual heavyweight in terms of absolute universal knowledge.