AngieLake writes: This was the text of the information board that accompanied the stone balls in the summer 2001 exhibition at Skara Brae's visitor centre museum.
"Mystery Objects
Mysterious stone objects were found at the village. Their purpose is not known, but they had some religious significance. A great amount of time was invested in elaborately carving these stones, so they were clearly important. They could have been used in religious ceremonies.
Or perhaps they were symbols of power, and when passed round a gathering of people, bestowed on the holder the right to speak."
It's quite possible that archaeologists have different opinions by now.
Something is not right. This message is just to keep things from messing up down the road