We are all hurtling along aboard a big coal-fired ship.  The people in an engineering position to know are ringing the alarms that on its current maintained course, the ship’s boilers will soon blow, sinking the ship and drowning all on board—believers of the warnings and pooh-poohers alike. 
On the deck are a banker, a pension fund administrator, a hedge fund person, a union leader, an elected official, and an Opinionista named Vegter all saying, The warnings are mistaken, the science is disputed and ambiguous, and Stay Calm Don’t Worry Sail On Chaps.
We can side with the skeptics.  Or we can heed the warnings just in case the warners are correct.
In such a circumstance, debating cost-benefit and job losses is almost irrelevant and specious.  If the boilers DO blow, we all go down.