I was a bit surprised to see the Mac but anyone who has to travel to give a presentation has little choice.
Given the close association of RISC OS Now with PV a PC laptop with VRPC would be out on religious grounds.
An A9Home would be possible, but is a bit messy with separate mouse, keyboard and screen - which leaves the Mac.
It was plainly not was Louie's machine of choice - she had to ask the audience how to use it at least once.