This is a two-step procedure, starting with the naming of official suspects, which requires relatively little evidence, before progressing to a formal indictment if more conclusively damning evidence is found.

ECONOMIST: The McCann case

While for years scientists have cautioned that a single weather incident cannot be conclusively linked climate change, mounting evidence is proving that a warming world does bring more frequent extreme weather and a larger magnitude to such events.

FORBES: Climate Treaty Would Actually Be Good for Business

Armed with more sophisticated analysis tools than earlier rover teams, Curiosity scientists have been able to conclusively find the first on-the-ground evidence for the presence of abundant clay minerals within those drilled rocks.

CNN: Have a drink on Mars

Although computer usage has not been conclusively shown to cause permanent damage to healthy eyes, there is evidence to suggest that small vision defects, which do not cause symptoms in everyday life, may start to cause problems when carrying out more visually demanding tasks.

BBC: Computer eye tests

While saying it found "strong circumstantial evidence" that China undertook such a plot, the Republicans concede that they could not say conclusively whether the Chinese government funded or directed illegal contributions to the president or members of Congress.

CNN: By Jackie Koszczuk, CQ Staff Writer

While we cannot conclusively determine that managers are providing selective disclosure in these off-line settings, our evidence does suggest that selective access to management conveys more benefits to investors than public access even in the post-Reg FD period.

FORBES: Can Investors Benefit from Private Meetings with Management?