It's true, Christmas can feel like a lot of work, particularly for mothers. But when you look back on all the Christmases in your life, you'll find you've created family traditions and lasting memories. Those memories, good and bad, are really what help to keep a family together over the long haul.
There is no doubt that I, also, had long been aware of the problem, i.e. producing X-ray interferences, before the inherent difficulties had finally been surmounted.

