It would be largely unverifiable and would seriously undercut our negotiations on arms reduction.
Most of these systems come into the category of occult pursuits, as they are the interpretations of phenomena on the ground of fanciful presumptions, by an appeal to unreal or at least unverifiable influences and relations.
To arbitrary and unverifiable metaphysical speculation, and to forms of "absolutism" which have lost touch with human interests, this humanism is particularly destructive.
Only here, instead of assuming something immaterial (and therefore unverifiable), we fall back upon a current of air or gas (irv€Uµa); the essential reason of the thing is itself material, standing to it in the relation of a gaseous to a solid body.
Bad or unverifiable carbon credits are likely to jam any carbon trading system involving the biosphere.