Full Idea
Eidetic Reduction consists of producing variations in the individual object until we see what is invariable in it. What is invariable is its essence or Eidos.
Gist of Idea
Find the essence by varying an object, to see what remains invariable
Source
Victor Velarde-Mayol (On Husserl [2000], 3.2.2)
Book Reference
Velarde-Mayol,Victor: 'On Husserl' [Wadsworth 2000], p.45
A Reaction
This strikes me as an excellent idea. It more or less describes the method of science. Chemical atoms were thought to be unsplittable, until someone tried a new variation for dealing with them.