Question

human beings are not the Pinnacle of the evolution, justify this statement

Answer 1

Humans are not the best of the evolution, but they are just a part of evolution in the evolving life. For eg., we can't say the old ancient creatures are inferior to humans because at their era ( olden age ) the environment suited which simple structures so they had simple. 

Now nature has become complex so the human structure is complex and we cant say humans are the best, but they are a part or path towards evolution.

Answer 2

Humans have advanced from their ancestral form where they needed simple characteristic to adapt with the simple nature. But with passage of time human as homo sapiens have just evolved according to the nature but they are not at the pinnacle as further improvement are always inevitable.

Hope this worths writing!!!