Tom writes: Sudden changes in life often occur out of the blue, and such was the case for 37-year-old Frank Dunstable in the mid-1960s. After years spent in barroom brawls, wielding his tongue like a sword in drunken arguments and hurling insults, he chose the quiet life. He gave up drinking Aussie whites and turned his back on the fools and swindlers of poker tables and betting shops. One Saturday afternoon, Frank was sitting in a quiet corner of a city-centre pub, trying to keep a low profile