... and becaues their is no evidence of life before the cambrian period ...
Stop making stuff up.
what's the alternative?
Creation?
Which would mean that all creatures were actually created individually including man. this would put an end to decent with modification and the idea that mutations cause species to change into new species.
No. Even if life was magicked into existence in the Cambrian, which we know for certain it was not, the evidence for the evolution of man from Cambrian precursors would be certain and undeniable. Well, undeniable by anyone whose opinions were based on scientific evidence rather than fairy-stories about talking snakes.