Yesterday I found myself sitting next to my lanky 14 year old son at the radiologist while he filled out a medical form. "Mum, what's my Medicare number? And who do I put as my next of kin?" His right pinkie had taken a serious hit during a volleyball game yesterday at school. The joint was all swollen and bruised, so the doctor advised an X-ray to check for a possible fracture. The radiologist called us in. She was a sweet Japanese woman slightly older than me. As she adjusted the equipment, she recognised Nathan's school uniform and remarked that her son used to attend the same school. "He's at university now studying Electrical Engineering" , she said proudly. Afterwards as we headed out of the radiologist clinic, a little boy scurried past us on the stairwell, his mum behind calling out for him to slow down. I felt a wave of nostalgia as I saw myself sandwiched between the images of these two mothers. For a moment I was transported into that same sce...