@gavvet,
This is a great article and an interesting topic as well! Biological Evolution is something that we need to discuss deeply! Shame most of people has no clear idea about it! Yeah it's very complicated! Sometimes I am thinking how our body was build. How this system works and who created such things! I know it's hard to find answers!
So keep sharing such great posts with us! This is really interesting topic to discuss!

Cheers~