Lean manufacturing involves doing more with less. This is the process of eliminating or reducing waste that does not add value to the end product. Waste can occur during customer service, design, product manufacturing and distribution. It is all about cutting the cost of producing high-quality products before they go to market.
In Manufacturing (like professional sports), its all about minimising mistakes. Mistakes cost you the game. So it is unforgivable for software to 'allow' duplicate entries, accidental keying mistakes and lack of critical visibility of data. Software should illuminate the problems and bottlenecks (Lean) and ring the alert bells, not hide the mess within obsure data.