Originally Posted by
FullMetalJackass
More comparable & pertinent would be:
Person falls into a waterway & is drowning, competent swimmer sees this, asks if they need help, offers to throw them a life saving ring but the person who falls in says "No, it's ok, I can handle this, you carry on doing what you're doing...."
And applying the rationale expressed in a previous post, if the person in the water ultimately drowns, the decision by the swimmer not to jump in and save a life is causal to the drowning.