Every person who is offered a knighthood has the opportunity to say yes or no. You get a letter from the Prime Minister saying you've been recommended for a knighthood and there are two little boxes, one says yes, one says no.
An actor would be foolish to do something that might hold up the picture, or more importantly incapacitate him. If an actor does do a stunt he needs to make sure a stunt man stands by to see that it's done correctly.
Apple is a wonderful company for its customers and investors. So, too, Pixar. (NeXT, not so much...) But Apple is also an engine of misery for its subcontracted Chinese workers.