is the discovery of deception not a new ground in itself? "jump or fell". "the suicide of your father upset you, go seek therapy", ... don't qualify as new grou

is the discovery of deception not a new ground in itself? "jump or fell". "the suicide of your father upset you, go seek therapy", ... don't qualify as new grounds? does the law explicitly regulate settlement, new grounds, etc or is it emergent behaviour or "standard operating behaviour" of which everyone assumes that is what the law says as opposed to what the law actually says? Edit: perhaps a clearer phrasing in everyday language: is there a difference between how lawyers, judges, ... have the cookie crumble versus how the law says cookies should crumble?