It's an effect on the side of survival, correct? It's not that some particular change was "selected" in order to increase fitness but instead that all minute ch

It's an effect on the side of survival, correct? It's not that some particular change was "selected" in order to increase fitness but instead that all minute changes were selected simultaneously and some were pruned. There needs to be a smooth path from the "current location in design space" to any improvement under which there is never anything damaging enough to prune off that path. And then, this "smooth path" idea relates neatly with topological notions of computability.