Under pressure is
the only way i work,
and by myself is
the only way i'm hurt.

what am i?

The jugular vein located, on an animal, starts proximally at the base of the neck and moving towards the head along the jugular groove.

Bob: coke is baby pandas.jim: what? how do you figure that coke is baby pandas? bob: because this book says so.jim: how do we know the book is correct? bob: because it says that coke is baby pandas.jim: how does that prove the book's accuracy? bob: because it's statement involving coke and baby pandas is correct, therefore it is accurate.jim: how do we know that it's correct? bob: because we have concluded that the book is accurate, and therefore the statement is correct.therefore, coke is baby pandas.