Having lost their most grounded member, bassist Walter, there have been major changes in the Foals camp since 2015's 'What Went Down'. But the group have pulled together and returned with a razor-sharp pair of albums, 'Everything Not Saved Will Be Lost', the first part of which is out today. Andrew Trendell met Yannis and co to talk about friendship, ambition, AI and how to thrive in the messy world we live in.