There's an obvious answer - run everything on GPUs. Each speculative branch runs in parallel on its own core, and you add a layer of super-fast branch switching

There's an obvious answer - run everything on GPUs. Each speculative branch runs in parallel on its own core, and you add a layer of super-fast branch switching when a branch runs into a problem. Given the current state of computing, I am unable to state definitively if this suggestion is satire.