Oswald in the doorway: the blog of the Oswald Innocence Campaign, by Ralph Cinque

This is what happens when amateurs try their hand at anatomy.

Backes is saying that that is Jackie's left hand in this picture. 

But, as you can see, it is her right hand. 

Notice the thumb jutting off at its own angle and the long index finger. And the space between them is known as the purlicue. 

You see, Backes, human beings have this thing called an opposable thumb. It's something that we're famous for. Observe that you can touch the pad of your thumb to the pad of each of your other four fingers. Gorillas can't do that because they don't have opposable thumbs. It's one of the things that distinguishes us from the lower primates.

Now, if that's not her thumb and index finger, what is it? Her ring finger and pinkie? But, that's absurd. There's no purlicue between the ring finger and pinkie; they are parallel. Furthermore, you can see the big index finger knuckle sticking out, which I have added.

Furthermore, we can distinguish the other fingers, which I'll add.

Plus, you pointed to her left shoulder in the photo. So, how could this forearm ever reach that shoulder?

How does that forearm ever get over to the other side of her body, Backes? You can see by the angle that it's her right forearm. You can see by the orientation of it that it is her right forearm. There is a natural internal rotation of the arm on a human being which puts the dorsal side on the outside, which is what we are seeing here. There is no way that that is anything but her right forearm. 

Then, you even traced around the thumb. But, it's her right thumb, Backes, not her left. Her left thumb would be on the other side of her hand. 

Look at the angle you put. Look how you have the line for her index finger veering off in a different direction. That only happens between the thumb and index finger, not the ring finger and pinkie. It has to be her right hand.  It cannot be her left hand.