Thanks to the game Continental War, most of the Chaos Memories sealed by Joshua were being slowly grinded away, softened by a billion people day and night. Likewise, with practical and reliable Extraordinary legacies obtained from the game, it had spread far and wide over the entire Mycroft civilization, even becoming a part of everyone's lives.
In that respect, the relationship between Joshua and the entire Mycroft civilization could be said to be mutually beneficial. If Joshua had not been the one to resist and destroy the Chaos Memories, those fragments would never have been weakened, and hence destroyed, by the spirit of most players who were normal humans. Conversely, if Joshua had not had a billion people analyzing and attempting through multiple angles, his individual will could never have quickly gotten rid of the Chaos Memories that originated from millions of different categories.
The effect of their partnership hence far surpassed synergy.