The RDR methodology allows incremental changes to the knowledge base (RuleSet) without causing unwanted side effects to the existing knowledge base or existing rule set.

Excess-burden calculations typically assume no other distortions. If other distortions exist, the incremental excess burden of a new tax depends on its effects in other markets.

In the paper, the effects of accompanying attention on physiological and psycho-logical loads have been studied by diverting attention focus during incremental exercise.