Reengineering is the fundamental rethinking and radical redesign of business processes to achieve dramatic improvements in critical contemporary measures of performance such as cost, quality, service and speed.
Automating a mess yields an automated mess
Business reengineering isn't about fixing anything. Business reengineering means starting all over, starting from scratch. Business reengineering means putting aside much of the received wisdom of two hundred years of industrial management,… How people and companies did things yesterday doesn't matter to the business reengineer.