Why is there no OS layer? Having just the concept of a firmware layer stand in for this is not sufficient, as the security implications are different. Also I lo

Why is there no OS layer? Having just the concept of a firmware layer stand in for this is not sufficient, as the security implications are different. Also I looked for, and did not find, what their definition of “robot” is. What is in scope, and what is out of scope? Is a self driving car out of scope, and why?