Agile follows Ohm’s Law

Lean follow Ohm’s Law. Ohm’s law can be stated as the current in a resistive circuit is directly proportional to its applied voltage and inversely proportional to its resistance.

 

In equation I = V / R

 

Usable Product = Value Added Inputs / Wastes

 

Any usable software or hard ware =

 

(Clear Requirements, inputs, understanding)

—————————————————————————————

Waiting time for approval, Review, rework, Bugs and defects injected

 

Lesser the resistance more the current. Current follows the path of least resistance. This classical law has amazing similarity when applied to PULL system of Lean Production. The Pull system ensures that the value stream of any product life cycle flows in a path of stream. When the upstream activities of this product life cycle are facing resistance in the form of impediments like wait time for approval, review and multiple hand-offs it tends the lower the Value (current) of the Usable product.

 

We can adapt the Ohm’s law in Lean Scenario as Value(defect free product release) of the product is directly proportional to the Value added Inputs (like coding, release) and inversely proportional to the resistance (like waiting time for approval, review and rework, bug fixing etc).

 

To achieve the maximum current that is the Value proposition for the customer, the important task of Project head is to remove the resistance, the wastes in the words of Lean. The process should also ensure that direct value added inputs are taken for converting them into valuable outputs

 

If we consider requirements as valuable inputs, and released product as valuable output then the wastes are unnecessary waiting time for approval, review, documentation, rework, bug fixing time, defect injection for not following standards and best practices, etc.

 

The output i.e the usable product release will have to be streamed out by pulling the flow naturally without having resistance / wastes discussed above.