He said the lengthy and costly inquest had played a crucial role in testing those theories - but that some people would continue to believe in the murder theory no matter what the verdict was.

BBC: Duke 'did not order Diana death'

These people believe in the Technological Singularity theory: The possibility that technologically augmented intelligence will change human life as we know it or possibly wipe it out completely.

CNN: Apocalypse believers' big finish predictions vary

Patients responding to anti-retrovirals would put a serious kink in the XMRV contamination theory, which is one reason some believe that these researchers are determined to get patients off them.

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In theory the peace accord would let them go home, but few believe it.

CNN: Bosnian city gets ready for NATO peacekeepers