The theories are just that. Theories. The language is considered and measured so as to give the impression of a reasonable approach. But increasingly, these new and 'speculative' theories pour out and, since the self-same scientists have exclusive access to all the tools and all the toys for close observation, they take on the personas of high-priests giving sermons on what we are, ahem, encouraged to believe. Give us the tools and we can decide for ourselves!
http://www.bbc.co.uk/news/science-environment-10967292
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