Comment by joshuamorton

As someone who has no skin in the game and is only loosely following this, there is a tool: https://github.com/google-research/circuit_training, the detractors claim to not be able to reproduce Google's results (what Dean is commenting on) with it, Google and 1-2 other companies claim to be using it internally to success (e.g. see the end of this article: https://deepmind.google/discover/blog/how-alphachip-transfor...).