Can a Linear Program Do Weight-Space Programming?

· Nathan · Nov. 9, 2026, 2:23 p.m.
Summary
Last week, MIT CSAIL published Sparks of Weight-Space Programming. Given the raw weights of a small network, GPT-6 Astra could tell which game it had been trained to play. Given only a game’s rules, it could write the weights of a small network from scratch and beat networks trained with PPO for 100 million steps. No gradients, no training loop, just reasoning about what the weights compute. They coined this weight-space programming....