Iains has to all intents and purposes
reduced himself to the role of
old pub nutter
sat in the corner burbling away to himself and his imaginary dog...

The Landlord whispers to newcomers to the pub..

" see that old.. errrmmm.. character in the corner, he used to be such a clever well educated chap..
Apparently somebody very important in his field of work.
until something traumatic happened and he lost the plot completely..
So sad really, but you'll get used to him if you drink here regularly..
It's safe to say hello to him, just don't mention politics anywhere within his hearing.. ever..."