One new IDEA can make thousands of years of rote productivity obsolete.
Ideas come randomly out of nowhere. Usually when the mind is resting and/or experiencing something new. I designed a new type of sensor people now use all over the world. All because of how a wind chime reflected off a girl I was painting.
For me, that is the point of Burning Man. To see and experience things you NEVER otherwise would.
Most creative design firms now have field trips to BM for that reason.
Some things are better left un-experienced. I've always figured life doesn't need to be a freak show to keep me entertained.