I’ve always been fascinated by our human anatomies and the choices, if He exists, that God made when designing us. Two kidneys, two lungs, but one heart. Two eyes and two ears, but only one mouth and nose. I can smell the significance of these choices, but I cannot see the logic in full.

How magnificent a redundancy to have two of an important limb or organ! We sit safe in the knowledge that were one to fail in a lifetime, we could hobble along at half-speed rather than face immediate oblivion. A left-handed existence is better than no existence.

But then what to make of those solitary pieces with no such backup? Our one brain and one spinal cord. Pieces that I can only posit are too delicate to be replicated embryonically.

But then what of twins? Two brains between them, two spines and two mouths. Does that not suggest such redundancies are possible in the womb for the lone babe also?

I must admit the topic lies close to my heart. I was after all a twin, born in some ways incomplete. And with the recent passing of my brother, I am left to hobble along at half-speed. A whole body, missing a phantom other body.

The human brain splits into two hemispheres, each specialised to different roles. Presumed of equal importance, but different nonetheless. Were I and my brother the same? Perhaps we both functionally missed half a mind.

Two hemispheres, but within them only one pineal gland. God. Again, that singular organ surrounded by pairs. Did you know Descartes thought it housed the soul, due to its singular nature?

I wonder on these Godly biological concepts and cannot help but extrapolate. I cannot in good conscience assume the soul is imparted to us in tandem with our eyes, or heart or brain. And if it be later, then is one soul shared between twins in the womb? Does that explain the empty part of me?

Am I half a soul? Or if the soul be an asymmetric organ, am I less? Am I to live a left-handed existence without him?