That could explain the odd moments of lucidity I suppose, Tom calls him a Troll (Far be it for me to agree or disagree, to borrow one of Zlatan's techniques)Do you really think he could work out the hidden meaning in 42?
It is after all metric, and he might possibly be having one of his anti-EU "I voted to remain" days. They're like that at the North Pole, it's the cold freezing the brain y'know.
.
Now Terry Pratchett did point out that the colder it gets the smarter Trolls become, which does mean his performance increases the nearer to home he gets, and lord help us when he aboard his home made submarine in semi tropical waters.