11. In what the hospital's chief executive called " a tragic error ," 12. French President Jacques Chirac termed Russia's move " a tragic error ." 13. Paris Mayor Bertrand Delanoe called it a " shocking act and a tragic error ." 14. I felt he made a tragic error , and it's a very sad story ." 15. Dr . Per Garder, a civil engineer at the University of Maine, calls this a tragic error . 16. A badly trained worker makes a tragic error ; an oversight by an engineer produces a fatally flawed component. 17. Hughes wrote, " The continued acceptance of John Geoghan for priestly assignment was a tragic error ." 18. The United States made a tragic error in going to the WTO to push for a lift of the ban. 19. It would be a tragic error to regard the progress made during four years of sustained diplomacy as a mere episode. 20. There should be great care to avoid tragic errors that would increase the sense of uneasiness and incomprehension among the public,