It's always a curious thing when liberals become conservatives (or vice versa), and people do an about-face on climate change or atheism. You wonder what triggered the conversion. Was it a gradual shift, an existential crisis, or an epiphany? On individual issues, I wonder if it depends on how deeply you are invested in a given position. For example, a week ago, the cartoonist Doug Piraro wrote that genetically modified food "scares the crap out of me." Here was his accompanying cartoon.