[NormsRevenge]

The phrase "very likely" translates to a more than 90 percent certainty that global warming is caused by man's burning of fossil fuels. That was the strongest conclusion to date, making it nearly impossible to say natural forces are to blame.

What that means in simple language is "we have this nailed," said top U.S. climate scientist Jerry Mahlman, who originated the percentage system.

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"Very likely" is a phrase for fortune cookies and the Magic 8-Ball. Not for science.

and climate scientists too. ;-)

[ProtectOurFreedom]

"Very likely" is a phrase for fortune cookies and the Magic 8-Ball. Not for science. Not true. Suggest you look up "Probabilistic Risk Assessment" or PRA. It's a systematic and comprehensive methodology to evaluate risks associated with complex engineered systems such as airliners and nuclear power plants. I worked in the energy industry many years and it is widely used to determine how much to invest in redundant systems as well as how to design core systems to avoid failure.