If i should ever run afoul of the law i would not want a jury .I would ask for a judge only decision.What do we ordinary people know of forensics etc?

Miscarriage of (justice?) can indeed be cruel, but the article is part of Crispin Hull’s often cogently-expressed distaste for juries. I tend to disagree with him in spite of his legal expertise, and my lack of it, and bring up a couple of thoughts:
(Previously?) revered Lord Denning, regarding the Birmingham Six in 1988, saying: "Hanging ought to be retained for murder most foul. We shouldn't have all these campaigns to get the Birmingham Six released if they'd been hanged. They'd have been forgotten, and the whole community would be satisfied... It is better that some innocent men remain in jail than that the integrity of the English judicial system be impugned."
With Australia hell-bent on Americanism, the possibility of elected judges - and as a result, some aspirants for hire?
Our own Harry Gibbs, Lord Denning-like, quick to throw one of his fellow judges to the wolves for legal asthetic appearance rather than wait for facts to be determined during legal process.
No, juries are not perfect, but - as in their 19th century findings of felons being guilty of misappropriation “to the value of 20 shillings” rather than of the hanging-offence which a value of a guinea or more would bring - maybe they still are worth their keep; hopefully. I don’t expect perfection either way, but am swayed on the jury side.

Colinsett - I also tend to your preference for juries as less likely, on the whole, to judge harshly and wrongly. Lindy Chamberlain has had a terrible time of it, and the jury in her case let her down badly. But as you say, on balance, trial by jury is a safety precaution that works more often than not. Google "Anthony Gray Mockery and the Right to Trial by Jury" for an extended argument in favor of juries. A single sitting magistrate (or judge) is LOGICALLY more vulnerable to corruption, even when 'greater knowledge' or presumed greater sophistication might be thought to lead to more sound opinions.