Arguman allows a user to edit his claim. He may use this feature to effectively withdraw or even reverse his claim.
If other people have already added their nodes either to support or attack that claim, then they should have a chance to edit their claims to address the change in the "upstream" node.
Otherwise the whole chain may become disjointed.
Another alternative is to make the node uneditable when someone responds to it.
Arguman allows a user to edit his claim. He may use this feature to effectively withdraw or even reverse his claim.
If other people have already added their nodes either to support or attack that claim, then they should have a chance to edit their claims to address the change in the "upstream" node.
Otherwise the whole chain may become disjointed.
Another alternative is to make the node uneditable when someone responds to it.