Philosophy has traditionally been done from the proverbial arm-chair. Sure, we may not have fancy science labs, or Large Hadron Colliders, but what we lack in physical equipment, we try to make up for with sheer mental power and exquisitely designed thought experiments.
And if you've ever taken a few philosophy and/or ethics courses, this cartoon will make soooo much sense to you... or bring back some painful memories :)
And you get extra points if you got all the references.
Via Saint Gasoline.