The per Clinical Trial phase of discovery of molecules which hold promise of solving certain diseases is completely revolutised by the use of AI to find candidate molecules which can be taken into the Clinical Trial phase. The companies are leveraging the new technology — which learns from huge amounts of data to generate answers — to try to remake drug discovery. They are moving the field from a painstaking artisanal craft to more automated precision, a shift fueled by A.I. that learns and gets smarter.