I think most lawyers are well aware of that - they say you can't predict what a jury will do.
They know it for sure...whether they think anything is wrong with it, or that it needs changing is debatable. When I suggested to my QC cousin "12 good men/women" juries be replaced by "specialists" of some kind (as is common practice in many countries and used to be the case with Diplock Courts in NI) he looked at me like I was something the cat dragged in. Still he does make eye-watering sums of money convincing juries to pay seven figure sums to victims of NHS neglect, so I guess I get where he is coming from.