While Milan's trophy haul goes some way to illustrating the impact of the Mind Room, the public testimony of the managers who backed Demichelis' brainchild is perhaps as telling. In his book 'The Immortals', Sacchi's appreciation of the laboratory is such that he describes Demichelis as "a psychologist whom I needed more than the players". Ancelotti, meanwhile, has spoken of the "value" Demichelis added to Chelsea "with his experience of the Milan Lab".