My invention involves people using machinery (computers, cars, cell phones, etc). I have been warned on this forum against including people as elements of a claim. Are the rules for specifications as strict? For example, I have a console within a vehicle as part of my invention. I have taken pains to exclude the vehicle itself from the claims, but without a human operator interacting with the console, the vehicle is sort of inert. Can I draw a driver in a car interacting with a console, or does that make a car and a driver part of the invention? Can I depict a passenger?