Mr. Gore's decision to embrace campaign finance as an issue seems striking, given his own history -- and the fact that when the disclosures first surfaced about his fund-raising, he steadfastly refused to concede any error.
He then sprayed two unforced errors to concede a tiebreaker in the fourth to give Almagro hope of pulling off a famous theft.
Yet Mourinho has long since conceded an error in pre-season planning which saw his squad return in mid-July, a week after almost all other Premier League rivals, and immediately depart for a base in Montreal, Canada.
As John Kampfner notes, the manifesto authors remain compromised by their failure to concede their error in supporting the initial invasion.
However, Evans had to concede "one error" when the BHA's investigating team leader, Tim Miller, initially responded to Morrison's request for the Southwell CCTV.
That's one reason that, by the time of his dismissal, Comey had few public advocates and many detractors for his actions and his unwillingness to concede error.
At a news conference last week, Cardinal Joseph Ratzinger, who heads the Vatican's Congregation of the Doctrine of the Faith, the modern successor to the Inquisition, addressed the issue of why the church feels ready to concede error now, and not in earlier times.
"I thought he made serious mistakes," Professor Kloppenberg said, "and I thought he compounded the problems by refusing to concede his errors.
Unlike some Brotherhood leaders, Mr. Beltagy is willing to concede some errors by Mr. Morsi, who often seemed indifferent to police repression of non-Islamist protesters during his calamitous year in power.
Innocent people do end up in prison, on death row and possibly even executed because of poor performance from prosecutors as well as defense counsel, and because of a refusal to concede and correct errors like false confessions and faulty eyewitness identification procedures.
If people really are responding to Cameron like an audience dazzled and charmed by a virtuoso improviser, this is a major problem for his opponents, because his readiness to concede errors adds to the performance, as – bizarrely – do the errors themselves.
