Minto is the originator of the MECE principle pronounced "ME-see",[6][3] a grouping principle for separating a set of items into subsets that are mutually exclusive (ME) and collectively exhaustive (CE).[7] MECE underlies her Minto Pyramid Principle,[3] which suggests that people's ideas should be communicated in a pyramid format in which summary points are derived from constituent and supporting sub-points:[8] Grouping together low-level facts they see as similar Drawing an insight from having seen the similarity Forming a new grouping of related insights, etc. Minto argues that one "can’t derive an idea from a grouping unless the ideas in the grouping are logically the same, and in logical order.”[3]