Proposition that assumptions
should be reduced to their minimum. Thus, if two assumptions seem to be equally valid
, the simpler one should be preferred. It is attributed to the English philosopher and monk William of Ockham (c.1285-1349) who expressed it as "Entities are not to be multiplied beyond necessity
." Also called principle
of ontological economy
, principle of parsimony, or principle of simplicity. Also spelled as Occham's razor or Occam's razor.