Maintenance will be performed on the forums for the next couple of days. Expect some downtime.
Saying that there is no specific structure to which all jokes conform is like saying that there is no specific structure to which all houses conform. One does not refute the point that something doesn't have the structure of a house by asserting that there is no specific structure to which all houses conform.You realise that there is no specific structure in which all jokes are being told, right?