Remember Penelope, from Greek mythology? She was Odysseus' wife, left behind while he went off to Troy and was away for twenty years. She was under quite a lot of pressure to re-marry, as Odysseus was 'presumed dead', but Penelope was a cunning lady herself and managed to play for time. Her strategy was to announce that she would choose another husband only after she had finished weaving a shroud in memory of Odysseus, and every day she worked on her loom. And then every night she unpicked her day's work.
I was reminded of Penelope when I spent all last evening crocheting a hat, only to realise when I finished it that I had made a mistake in the second round, thus completely ruining the stitch count and size, and so had to unravel the entire. darn. thing.