Do you think the "Jury" is the greatest weakness of the american justice system?

Think about it. Jurors are people who have next to no legal expertise, and are easy to manipulate by a skilled lawyer.
There even is an entire industry with the sole purpose of spying on the jurors to make it easy for the lawyer to find out who is more likely to decide against his client and thus should be dismissed. This puts poorer people at a severe disadvantage and in essence means that you can essentially buy your victory in court, and it makes it entirely possible for criminal to be set free even after admission of guilt, by simply manipulating the jury emotionally so that they can’t reach an unanimous decision.