Why settle for one arch when you can get two?

Today’s Gratitude Item: Amusing card tricks. Usually I’m very bad at doing ‘magic’ tricks but have finally found a trick that works brilliantly. It’s so easy to perform that even I can pull it off. Said trick is useful for teaching something called ‘error control’ and it’s needed for the Information Technology course that I teach. Practising (aka showing off) on family has been a lot of fun.