Take the following as truth: The commercial companies GAO visited achieved success in product development by first achieving a mature, stable design supported by completed engineering drawings during an integration phase and then by demonstrating that the product's design was reliable and critical manufacturing processes required to build it were in control before committing to full production.
Then the following statement: "Mature, stable designs were an important part of the success of commercial companies in the area of product development." is true, false, or inconclusive?