Many years ago (and no, I'm not saying how many), I took a two week course for trial lawyers who had been in practice a minimum of five years. We were videotaped in the courtroom, trying cases in front of mock juries. Intense, effective, and an eye-opener in how we were perceived as trial attorneys by jurors, the course provided one huge eye-opener for me. A microphone was placed in the jury room, and we lawyers were able to hear the jurors discuss the cases we presented.
Thus was born my belief in the jury system. In jurors, to be specific. The jurors I heard showed such commonsense, I was in awe. They cut through the razzzle-dazzle, the bull pucky, the grandstanding, to dig out the salient points. This may not happen in every jury deliberation, but I'm sticking to my faith in the jury system, no matter what.
And that's why, when a supposedly slam-dunk case is lost, I blame the lawyers for not providing the jury with the evidence. And that's all there is to it.