Wasting whose time? Each juror is supposed to decide based on a reasonable doubt, if someone comes in there and says look I think the crime is wrong, and I think this person should Have this verdict, and I’m going to vote that way, if no one goes along with you fine. If they do great, if they don’t, then you have a hung jury. Either way that single person has nullified the verdict. Thus a mistrial.

If anything, the government waste the time of people by bringing cases that should never have been brought to begin with.