Our advice
Guiding a project through TRIZ: multi-screen analysis

In the case of the watering can, don't consider a watering can in the general sense of the term, but aim for a "standard" watering can of a very specific type (choose an image) and stick to that version of the watering can.

The temporal leap should be chosen according to the expected leap in the future; thus, we imagine that the parameters which are the "springs" of past-present evolution are of such a nature as to have generated a break or a simple minor evolution. We can therefore expect to see jumps of the same amplitude in the evolutionary hypotheses. This copper watering can (-30 years) is therefore deliberately chosen to reflect a particular strategy (major technological...