In response to this post, I propose the following:
The cellular telephone is a modern man-made miracle. People on opposite sides of the earth can talk to each other as though they are in the next room. The device is made up of tens of thousands of interconnected microscopic parts, that work together with a global antenna network, to allow people to communicate. A few additional observations about this miracle:
1. 200 years ago such a device was unfathomable. If two distant people claimed to communicate with each other, it could only be through spirits or divine intervention.
2. As far as I know, no god had ever succeeded in making a cell phone.
The fact that JP cannot fathom an artificial liver has no bearing on the question of whether or not the liver is "divine" or natural. 200 years ago flying wasn't possible, and a modern jetliner would have been unimaginable.
The liver and other body organs are indeed remarkable structures, whose complexity we are still understanding. Yet ultimately JP's argument boils down to the watchmaker analogy, which I have already rebutted in a previous post.