https://books.google.com/books?id=wPE3AP66KIUC&pg=PA240&dq=Pointsman+in+Gravity%27s+Rainbow&hl=en&newbks=1&newbks_redir=0&sa=X&ved=2ahUKEwiSpNiOntb4AhUmEGIAHfJwCtcQ6AF6BAgIEAI#v=onepage&q=Pointsman%20in%20Gravity's%20Rainbow&f=false