Why is it necessary to roll out pizza dough over and over again? What makes a Leatherman�s saw more durable than an ordinary one? Why does simply spinning yarn make it stronger? And how do you ensure that an airbag deploys within milliseconds of an accident? Find out the answers to these questions and more in this episode of �Engineered With Marshall Brain.� Take a fast-paced and fact-filled adventure into the world of product design, manufacturing and testing as we go behind-the-scenes to find out how people and machines create some of life�s most fascinating things.