Many products are extremely and unnecessarily complex. Designers should seek to simplify the product from the outset of the design project. However, in some cases simplification could have a negative affect so designers should monitor the impact of any changes.

Pros: Easier end of life treatment reduces waste going to landfill. Improved reliability reduces waste. Simplification could improve efficiency
Cons: Simplification may reduce efficiency
Pros: Reduced development, manufacture, assembly and end of life treatment costs. Could result in product being more desirable
Cons: Less complex products may have lower percieved value
Pros: Easier to use products. Better value for money
Cons: Simple products may be less capable of meeting individual needs