While that's true the rest of the world does need concrete answers on questions, rather than, "We are only 95% certain that statement X is true." Basically scientific rigor is important to make good science, but that does not apply to policy and the rest of society. In other words, when making a statement that goes to the public, qualifying statements are problematic.
The scientific community is at great fault for not being loud enough about the impact of global warming.
The scientific community is at great fault for not being loud enough about the impact of global warming.