Settled Science?

When it comes to the age of life on earth, that scientists can question not only current conclusions but also the very process itself that has been used to determine the age of life on earth, tells me that the process is still really only a theory. Just a hypothesis. 

It's not something like aeronautic theory; or electrical theory. No-one can question anymore whether planes can fly or electricity can be used to produce light for domestic purposes. To question it would be like rethinking the distance from  Surfers Paradise to Burleigh Heads, Qld. 

But to question the age of life on earth in the amount of a whopping 700 million years - and to question the very process that's used in the first place - well that's still quite reasonable, apparently.

And yet popular conclusions - and the methods used to come to those conclusions - have not only been taught as a settled science, but also anyone who publicly questioned it has often been ostracised.

http://cosmosmagazine.com/news/worlds-oldest-diamonds-push-back-age-life/