To develop creative work is to manipulate. The creative process has less to do with quantification than it does with intuition. To be creative is to feel something rather than calculate something, and feelings are always subject to change.
What could art possibly mean to a global population that spends most of its days eking out meager livings on the rough streets of Bangalore, Dar es Salaam, or Medellin? What does art possibly mean to the people who spend their days pouring over spreadsheets working to score points with the House Appropriations Committee?
A life spent with all things largely known at daybreak is unlikely to yield much in the way of success when the sun goes down. Success usually comes from the discovery of something that was unknown, be that a new business partnership, a piece of art, or smartly executed social media campaign.
The closer to a performance date, the more a performer begins to wonder if reading a book or watching a movie or even speaking to another person might inadvertently knock some vital mnemonic brick out of place, send the whole edifice of memorized exactitude cascading into the abyss.