Even someone who knows little or nothing about notebooks will be able recognise Apple’s MacBook Air at first glance. The wedge-shaped design, which is less than half a centimetre thick at its thinnest point, has been considered iconic since Steve Jobs held it up with one hand on stage during its 2008 launch. Almost a decade and a half ago, Apple made painful compromises to achieve lightness and portability in the MacBook Air: There was no DVD drive, no socket for an Ethernet cable and only space for a USB plug. With the new MacBook Air M2, Apple is largely putting an end to the compromises – a…