Balcony Advantages

Ok, so I would think being in the balcony would be better than sitting on the main level. I mean, whenever the book was describing the balcony view, it said that you could see everything. Down on the "white people level" you'd have head and what-not in the way. From up above, you would be looking down, so you could see more. That was the first thing that came to MY mind as I was reading this. Of course, since white people always sat below, they never knew this, I don't suppose, otherwise I'd think they'd argue for balcony. It makes since to me. What is the point of the trial anyways? Since there's an all white jury, because that's all they had, doesn't it seem like they all knew what the verdict is?