I arrived up North and almost immediately the discussions of what we were currently knitting began. My Mum showed me a lovely silk/alpaca project she was working on, as I looked more closely it looked scarily familiar. Out of my bag I produced a project that was almost exactly the same. Same stitch pattern, also used in a cowl, also in a red luxury yarn (mine cashmere).
We hadn't discussed either project at any point previously. Scary!