User:SummerPhD/Pebble found trapped in my sneaker

This morning, I found a Pebble trapped in my sneaker, between the 7th and 8th rib of the tread on the sole of the left shoe. Many have speculated about the source of this pebble, since I use a wheelchair, stopping the pebble getting stuck there during, for instance, walking across the macadam from lecture to my van.

Notability
While no online sources have discussed this pebble, we here present all available information on the pebble because reliable sources might be available off-line that simply have not been found yet. Additionally, we do not want to lose the information in this article, because the pebble (despite being carelessly discarded this morning) will be monumentally important in the very near future.