wrong feature or product Extra features Overproduction Mismanaging the backlog Partially done work Inventory Rework Defects Defects Unnecessarily complex solutions Not described Value Extraneous cognitive load Not described Psychological distress Not described Waiting & Multitasking Delays Task switching Waiting Movement (of people) Knowledge loss Relearning Extra Processing Ineffective communication Not described Not described Not observed Handoffs Transport (of goods)
and the interest of the producer ought to be attended to, only so far as it may be necessary for promoting that of the consumer. Adam Smith, The Wealth of Nations (1776)