Michelle Grattan , University of Canberra There’s a nice story about Arthur Fadden - the Country Party leader who became PM in the 1941 hung parliament amid conservative leadership turmoil - deciding not to move into the Lodge after a colleague told him he’d “scarcely have enough time to wear a track from the backdoor to the shithouse before you’ll be out”. The warning was prophetic: Fadden was dispatched in little over a month, replaced in a House of Representatives vote by Labor’s John Curtin. Scott Morrison, ensconced in Kirribilli, has already had a longer spell than Fadden, and his government appears safe in parliament, despite losing its majority. Regardless of these differences, Morrison’s likely trajectory seems as clear as that of “Artie” all those years ago. The widespread feeling that the Morrison government is doomed will only be reinforced by this week’s outbreak of hostilities between the former and current prime ministers. At one level, it’s hard to believe we’r