He's treating the entire train carriage to the sound of his voice. It has been a long journey ad he's not paused for breath
So far his little gems have included "rocket science is easy, just a bunch of equations...rocket engineering on the other hand that's hard " and "let's not gild the lily its a pyrotechnic" nd my favourite "ive only just met you so I'm not gping to start a fight"
Pity the poor man sat opposite who is sporting a glazed look and nodding at suspiciously regular intervals