Clarity is needed for credibility

Sir you rightly say that the “Climate Policy must be credible” April 19 and one of the basic requisites for that is clarity in the use of terms.

When on a simple water bottle you might find information such as calories=0 (thank god the implications of something different would indeed be frightening) there is no way to find a clear-cut definition on what is meant by for instance “clean energy”. The closest we get is to some mumblings about energy that causes little or no harm to the environment and which will not get you that far down the lane of credibility either.