causality (redirected from INUS condition)

Mackie's "INUS condition." The causal relation should be expressed by saying that the cause is "an insufficient but necessary part of a condition which is unnecessary but sufficient" for the occurrence of the effect.

There are numerous other possible causal patterns that could be observed, such as a threshold effect (drowning and depth of water), or a viable range (survival in relation to temperature), not to mention INUS conditions. (INUS conditions refer to situations where an event can occur when a set of conditions arises, and there may be several such sets that produce the same effect.