Quite... The public now take "Beyond all doubt" as to mean the evidence must be 100% watertight and that's rarely the case.
Sure, 100% certainty is very rarely possible and, in any event, if the evidence approaches that (e.g. CCTV footage clearly showing the defendant chopping up a victim!) any sane defendant would plead guilty (hence no jury), anyway.
I think it should probably be more explicitly acknowledged that "beyond all doubt", "beyond a reasonable doubt" or whatever refers to a degree of confidence less than 100%. In very many fields, quantifiable 'confidence levels' of 95% are considered to be 'adequate', although sometimes going up to 99% or beyond in particularly safety-critical situations. That wouldn't necessarily help juries much, since attempting to quantify degrees of certainty/confidence is pretty arbitrary - but it would at least help them to understood that no-one was expecting them to necessarily be "100% confident".
Professional juries drawn from experts in the field should be the approach ...
That's not quite what I was talking about. 'Professional juries', as usually considered, do not comprise 'subject experts', which are a separate issue. Rather, they are people trained in making judgements about conflicting evidence, including expert testimony. However ....
but a jury system is far more advantageous to the current legal profession ie. they make more ££££
It's ridiculous to expect the public to understand the complexity of a financial crime or have to witness the appalling graphic images of some crimes (eg. post-mortem parthology).
There is clearly a problem when cases become technically complex. A few years ago a friend of mine was on the jury for a case which related to highly complex financial crime. After a while (I think a few weeks), the judge 'dismissed the jury' because he said that there was no way that they (or him) would be able to understand, let alone make a judgement in relation to, the technical complexities of the case being presented. I'm not sure whether he actually 'dismissed the case' for this reason, or whether he found some other way of dealing with it.
Kind Regards, John