Regardless of their flaws, Concord(e) and the comet were remarkable firsts in engineering, the latter of which no doubt helped Boeing et al in their rise to supremacy in passenger jet technology (helped by their respective governments). As for concorde, if one looks at the flying hours of other passenger aircraft (737 for example) one would find the first fatal accident of many types ocurred with lower flying hours but yet they still fly. Considering the technology and physical stresses on concorde airframe wouldn't it be more pertinent to compare it to jets flying above Mach than those below? But even compared to other passenger jets, and the age of the aircraft, aren't some posters somewhat harsh about one of the most extraordinary feats of engineering ever?