maybe they advised by their solicitors to say nothing as well of because of the following :
''
Reasonable doubt is a term used in
jurisdiction of Anglo-Saxon countries. Evidence that is beyond reasonable doubt is the
standard of evidence required to validate a criminal conviction in most
adversarial legal systems.[SUP]
[1][/SUP]
Generally, prosecutors bear the
burden of proof and are required to prove their version of events to this standard. This means that the proposition being presented by the prosecution must be proven to the extent that there could be no "reasonable doubt" in the mind of a "
reasonable person" that the defendant is guilty. There can still be a doubt, but only to the extent that it would
not affect a reasonable person's belief regarding whether or not the defendant is guilty. Beyond "the shadow of a doubt" is sometimes used interchangeably with beyond reasonable doubt, but this extends beyond the latter, to the extent that it may be considered an impossible standard. The term "reasonable doubt" is therefore used.
If doubt
does affect a "reasonable person's" belief that the defendant is guilty, the jury is not satisfied beyond "reasonable doubt". The precise meaning of words such as "reasonable" and "doubt" are usually defined within
jurisprudence of the applicable country. A related idea is
Blackstone's formulation "It is better that ten guilty persons escape than that one innocent suffer".
Beyond a reasonable doubt is the highest burden of proof in any court in the United States. Criminal cases must be proven beyond a reasonable doubt. '''