Medicine: the ultimate Sisyphean trial.
100% of humans get sick and die.
Also, you WILL, in fact, miss a diagnosis, be wrong, or just, in general, screw things up with fair frequency. Also, much of the knowledge you currently cherish is actually incorrect
So, to make it easier on yourself...at each step...simplify and get the moves right
If you don't know, just say so and do your best (accounts for 95%+ of everything we do. This isn't engineering, you know...)
However, when it's possible to "know" what's current, do so.
http://www.thennt.com/http://lifeinthefastlane.com/foam/