They are calling it the ‘Amal Effect’ because, following George Clooney’s marriage to human rights barrister Amal Alamuddin, it seems that what a bachelor film star of a certain age needs most is a consort with a supernova combination of beauty, brains, and serious professional achievement. The latest star to embrace the phenomenon is Brad Pitt — probably the most eligible bachelor in Hollywood since his split from Angelina Jolie and, incidentally, a long-time pal of Clooney’s.In Professor Neri Oxman he has found a dazzling supernova of his own, and reportedly thinks she is ‘the sexiest thing he ever laid...