Analysis System Technique (FAST)
Functional Analysis System Technique (FAST) is a variant of Value Analysis
in which functions are written on 3" x 5" cards and arranged in
order so that cards to the left answer the question 'Why?' and cards to
the right answer the question 'How?'. Separate horizontal chains of cards
are then arranged so that functions in different chains that occur at the
same time appear above one another, as below.