No, there was nothing inherently impossible in the idea.
While many scientists still hold that, given enough resources, prediction might be possible, many others maintain that earthquake prediction is inherently impossible.
Rapid changeover in transportation equipment is inherently impossible.
In Silver's formulation, reprogenetics will involve advances in a number of technologies not yet achieved, but not inherently impossible.
The Holocaust is inherently impossible to talk about.
Even more basic is many experts' view that it is inherently impossible to build enough cells to end crowding.
He had tried to do something that was inherently impossible.
Then there is nothing inherently impossible in his story.
There's nothing inherently impossible in this business of transposing an opera setting.
Ascribing universal attributes to a broad generation is difficult, and some observers believe that it is inherently impossible.