The courts can take notice of the subsequent events and can mould the relief accordingly.
The impact of subsequent happenings may now be spelt out. First, its bearing on the right of action, second, on the nature of the relief and third, on its importance to create or destroy substantive rights. Where the nature of the relief, as originally sought, has become obsolete or unserviceable or a new formof relief will be more efficacious on account of developments subsequent to the suit or even during the appellate stage, it is but fair that the relief is moulded, varied or reshaped in the light of updated facts. Patterson v. State of Alabama [(1934) 294 U.S. 600, 607], illustrates this position. It is important that the party claiming the relief or change of relief must have the same right from which either the first or the modified remedy may flow. Subsequent events in the course of the case cannot be constitutive of substantive rights enforceable in that very litigation except in a narrow category (later spelt out) but may influence the
