That power is fine unless you are Helen Keller.

The same as a Poet or a writer or an Artist.
The design strategies come automatically.Once they click they become fashion.In furniture the basic is the same as has been prevelent ages ago.The Tables are not turned against you,chairs still require its four legs (only it has become important politically) and the bed is not a 3 tier system..Things are just added from here and there.The subject matter of an antique piece is just added with a flourish in the modern times.In furniture particularly,it's a recycle only.What is out of date today comes into vogue after a decade.