When exploring the article I have found one interesting concept called Dead token. So we can not keep our token for over a very long period of time and we need to make at least a self transaction not to be counted as a dead token? I know that will eliminate all those token that privet key lost but isn't that possible to create a system to retrieve lost privet key so that we do not need to burn dead token? Sometimes people lost their private key by accident so I think that will be more convenient for the token holders.