50 No grossly excessive demands

This aspect of justice is also found in Books V to VII. For example, it is at the root of rules which enable the normal entitlements of a benevolent intervener to be reduced in certain cases on grounds of fairness.1. There are similar rules allowing for an equitable reduction in Book VI.2. These reflect the fact that there may be a gross disproportion between the amount of blameworthiness and the amount of the damage caused: a very slight degree of negligence may cause enormous damage. This aspect of justice is also represented, as a countervailing consideration to the normal rules on liability, in the rules on unjustified enrichment. It is most relevant to the defence of disenrichment, where a person who has disposed of a benefit in good faith is protected.3. It would be unfair in such circumstances to burden an innocent recipient, who no longer has the benefit received, with the expense of the claimant's mistake.