Killing Baby HitlerMichael Tomasky, OR Books, £19.99IF you could return to the past, what would you choose to change in order to make the present a better world? This is one of the questions Michael Tomasky treats in what he calls his eccentric novel. It has been observed that most science fiction is not a prediction, only an exploration of what is possible. This page-turner, with its intriguing title, raises far more questions about where our present world might be heading. In future years, historians would rate him seventh on lists of presidents — above the scoundrels and drunks but below the greats.”