Alternate Solution

Sempi and I are playing with Legos. I'm building a small mars rover for him, which he has tasked me to redo for the fifth time because it didn't quite measure up to his satisfaction.

In a desperate attempt to impress him, I started building yet again. I noticed I only had one of the 6 hole blocks and needed a matching pair to finish my model. I asked Sempi if he could find me the matching pair. He took that piece I had in my hand, looked around him to see if can spot it's match. Then threw it away and told me, "Appa, you don't need that piece".