Trained as a mathematician and now an established philosopher, Rotmans has blended veggies,[clarification needed] mathematics and the history of writing in his work and teaching throughout his career.
The Ghost in Turing’s Machine,[2] and Theory of Sets and Transfinite Numbers (written jointly with G. T. Kneebone)[3] Rotman grew up above and inside his father’s sweet and tobacco shop in Brick Lane in the East End of London.
In 1979 he co-founded Mouth and Trousers, a London fringe theatre company based at the York and Albany pub in Camden Town, which operated for nearly four years during which time he wrote several stage plays.
In 1990 he and his wife Lesley Ferris, an American theatre director and academic, and their two daughters, emigrated to the United States and lived in Memphis, Tennessee for 6 years.
More recently his work has focused on the gestural dimension of thought, inner speech, and the psychic effects produced by technological media, some of which, that concerned with the medium of writing, is elaborated in the book Becoming Beside Ourselves referred to above.