I try to learn from the past but I plan for the future by focusing exclusively on the present. That's were the fun is.
Cubism was an attack on the perspective that had been known and used for 500 years. It was the first big big change. It confused people: they said 'Things don't look like that!'
I go and see anything that's visually new any technology that's about...
You do have to change things as warfare changes.