Recently, Ryan Willams proved that Constructivity in Natural Proof is unavoidable to derive a separation of complexity classes : $\mathsf{NEXP}$ and $\mathsf{TC}^{0}$.
Constructivity in Natural Proof is a condition that all combinatorial proofs in circuit complexity satisfies and that we can decide whether the target function in $\mathsf{NEXP}$ (or another "hard" complexity classes) has a "hard" property by a algorithm that runs in poly-time in the length of target function's truth table.
The other two conditions are: useless condition that require "hard" property can not be computed by any circuits in $\mathsf{TC}^0$ and largeness condition that the hard property is easy to find.
My question is :
Does this result make the Geometric Complexity Theory (GCT) unavailable to resolve main separation problems such as $\mathsf{P}$ vs $\mathsf{NP}$, $\mathsf{P}$ vs $\mathsf{NC}$, or less moderately $\mathsf{NEXP}$ vs $\mathsf{TC}^0$?
References:
- Ryan Williams, "Natural Proofs Versus Derandomization"