The Causes of Old Attestations Running Around in the Network

Lighthouse nodes were getting bogged down with work that technically didn't need to be done at all. That was preventing a large portion of validators from actually doing the work on the actual chain tip and reaching finality. Lighthouse nodes were disconnected and when they were reconnecting, they were propagating old attestations. So I think it's all of this really goes to show that the beacon chain is a new consensus protocol. It is a new living network, like a new living blockchain that is in the wild for the first time.