The Need for Discomfort

JFK: "Too often we enjoy the comfort of opinion without the discomfort of thought"

...as quoted by the playwright Timberlake Wertenbaker in her lecture at Georgetown University, "The Importance of Being Uncomfortable".

'No pain, no gain'. Or in compputer-ese: 'GIGO: garbage in, garbage out'. It makes one think of PC-thought, no? Soooooo easy.