White Hatting in the Six Hats, Six Coats metaphor is about the logical perspective of a system. Edward de Bono calls this the optimist’s hat.
White Hats take the contextual design provided by the Yellow Hats and exprore it to its full extent. In the White Hat perspective designers optimize goals, networks, data, processes, people and times to theoretical limits. White Hat logical design is used by the Black Hat physical design team.
Like the other hats, the White Hat is worn with each of the Six Coats. The basic question is what are the logical limits within the context.
White Hat, Green Coat: How do we achieve maximum value for the customer?
White Hat, Yellow Coat: What are we navigating?
White Hat, White Coat: What is our data?
White Hat, Black Coat: What are our processes?
White Hat, Red Coat: What are our personas?
White Hat, Blue Coat: What is our peak performance?
White Hat also has a reverse purpose when variances occur in the transacting system. White Hats decide how to handle a variance which is to alter the system to accomodate the exception or to escalate it up to the Yellow Hats.