[timr]

Even if "they're currently working on" meant "it's available now or practical in the near future" (it doesn't), that doesn't affect what I said about the immense costs involved.

The portability of the device is not the core issue here. It's a bit like arguing that you can build a quantum computer today, so therefore we'll all have one on our desktop soon.

[xattt]

Extracorporeal livers were being explored in the 1960s. It was advanced enough that it was included in a contemporary Time-Life book. Unfortunately, experimental success was not observed and the idea was shelved.

[aidenn0]

Nobody has said "soon" I think you inferred meaning that wasn't there.