I
incumbent
Guest
There will always be debate and discussion on science, and it does change over time as further research is undertaken and knowledge evolves. Having said that on a lot of scientific topics, the evidence is very very difficult to refute - and when it is - it is typically only debunked with further, usually rigourously gathered, scientific evidence.
Which reminds me of this (How Math Works):
Saturday Morning Breakfast Cereal
![1449330284-20151205.jpg 1449330284-20151205.jpg](https://www.australianfrequentflyer.com.au/community/data/attachments/52/52123-922c74a43ae9bcb519a2ae1bd444a943.jpg?hash=kix0pDrpvL)