Faisal Islam,economics editor and Rachel Clun,business reporterAlphabet boss Sundar Pichai has warned of some "irrationality" in the current AI boomEvery company would be affected if the AI bubble were to burst, the head of Google's parent firm Alphabet has told the BBC.Speaking exclusively to BBC News, Sundar Pichai said while the growth of artificial intelligence (AI) investment had been an "extraordinary moment", there was some "irrationality" in the current AI boom.It comes amid fears in Sil...