It takes a sufficient number of compliant jurors as well as a foreman to get a quick slapdash verdict. I was a foreman on a jury trial here in NZ and the jurors definitely ranged from "will go with whatever everyone else seems to think" to "I have to think this through properly" to "this guy has to be found guilty/not guilty no matter what evidence I hear". Thankfully most were in that think-this-through group.
If your fate is being decided by a jury, pray that you get enough people who care about doing a good job, and/or a foreman who will *make* everyone go through a proper decision process.