One of the aims is to have the candidate as calm as possible. Why? As a potential customer of this product, I don't care how calm the candidate is. They'll h

One of the aims is to have the candidate as calm as possible. Why? As a potential customer of this product, I don't care how calm the candidate is. They'll have plenty of stress to manage on the job anyway. I just care if they can code. Weed out the posers and send me the rest. We can worry about the touchy/feely stuff later. Seeing that 90% of people can't write a C program that reverses a linked list makes me nervous about the strictness of the test. That's OP's main value proposition! A few bucks instead of a few hours to weed out the posers is an excellent selling point. Best wishes, OP.