Avi Wigderson (IAS)
I will review (and hope to revive) a collection of old works, surveyed in , which suggest obtaining circuit lower bounds by "fusing'' many correct computations (of a circuit too small) into an incorrect computation. This framework may be viewed as a generalization of both the "approximation method'' of Razborov, and the "finite limit'' approach of Sipser. This framework offers a "static" view of computation, which may eliminate the (problematic) need of progress measures in "dynamic" lower bound arguments (whether top-down or bottom-up). It further yields natural combinatorial and algebraic set-cover problems, whose solution *characterizes* the size of surprisingly many computational models (indeed, it gives rise to new ones: Span Programs were born this way!). In a couple of models, this viewpoint led to (slight) superlinear lower bounds, which nonetheless have not been improved upon for 25 years.
 Wigderson, Avi. "The fusion method for lower bounds in circuit complexity." Combinatorics, Paul Erdos is Eighty 1.453-468 (1993): 68.