But blade escalation continued: Rival Schick introduced the four-bladed Quattro in 2003, and Gillette struck back with the five-bladed Fusion in 2005.
South Korea's sensitivity to that tendency, widely labeled "Korea passing," reflects its long-held fear of being seen as playing second fiddle to Japan, its former colonial master and continuing rival.
Other matters were clearly more trying, like dealing with the continuing competition between rival American television companies (ABC, MTV and a coalition of independent stations) over programming details.
MORSE CODE pulled early, stalked a bit off the rail, continued between rivals through the drive and was edged for the show.
Although the challenges continued, and rival news organizations produced experts questioning the documents' authenticity, CBS and Rather didn't budge.
These two towns continued as rival entities until the 19th century, when a spate of new building joined them together and expanded south onto the Sava floodplain, with a rectilinear new town of squares and public buildings.
In the longer term, however, with America and China both contemplating a return to the Moon and, ultimately, human exploration of Mars, the question is whether the space powers will continue as rivals or whether they will ultimately need to work together).
If countries are genuine and continuing sporting rivals, it is possible they can no longer be mortal enemies.
The back-and-forth between the two rivals continued on Thursday night.
But the delving into Dr. Dean's past record by news organizations and rivals continued.
