“Net” techniques work similar to a fishing net: you introduce certain way of making supporting net and than start to use the knots in an attempt to get new ideas. Among the techniques here there are: morphological analysis (Zwicky), “Size-Time-Cost” (Altshuller) and some others.
As it is in fishing, the effectiveness of the method is determined by size of the net, density of the knots as well as by the location of the net. Increase in size/density leads increase in probability of good results but also to dramatic (squared) increase in time to be spent on the analysis.
