The Government wants to promote innovation, especially in AI, to boost the economy. On the other hand AI will help make everything get more complicated, and when these things are like cars, healthcare systems, or the law, getting over-complicated will make them more problematic — which, superficially, then needs more AI to sort out. This paper argues that both digital technology and its developers need regulating. In fact, law reform in every area now needs to be driven by understanding computers and by properly managing complexity. This paper motivates and proposes a framework for updating the current Common Law legal presumption that computer evidence is reliable, we hope the Ministry of Justice will want to adopt.