Does it make sense to pursue impossible goals? If not, does it make sense to philosophize about pursuing impossible goals?
Of course, the key words there are enough energy. It sounds like Thiel might be forgetting to account for what we want to optimize and how much effort we're willing to spend on it.
Define "optimize" and "system"?
"Optimize" -- to constrain the system to within a subset of its state-space. Or in other words, to make only some things happen rather than all other possible things.
Generally, as long as something is physically possible, you can spend some amount of energy to make it reasonably probable or unreasonably improbable. This may just be far more energy than you happen to have, or care to spend.
I have no clue about physics, so I'm just curious.