Good thing we got the DNA on those birds.

A scientist investigating the question of what species of birds the US Airways plane hit before crashing into the Hudson said the team was pretty confident of the species based on gross visual inspection of the feathers, etc., and other historical information. And, thankfully, this was all confirmed with a fancy DNA test just to be sure. Because we need that.

A DNA test? Is this THAT important?

Apply this same scenario to the millions of diagnoses and medical decisions made every day in medicine involving wiz-bang gadgets, and you get some sense of one thing that drives medical costs - our addiction to technology and compulsion to use it, regardless of necessity or cost or outcome.