Do you believe or want to believe? 

A 2011 study by the Stress Management Center and Phobia Institute in Asheville, North Carolina, suggests an estimated 17 to 21 million people in the United States are affected by a fear of this day.

“It’s been estimated that $800 or $900 million is lost in business on this day because people will not fly or do business they would normally do,” Dossey said. 

Why fear about a simple number like 13?