In recently researching the Millerite fiasco of the mid 1800's I discovered that the 2nd Adventists were constantly using the term: NEW LIGHT to describe the latest explanation for why Christ had not come back as expected.
Even that phrase was co-opted by the JW's for their own failed policies.
There seems to be little at all that is an original thought with Jehovah's Witnesses.
Their true genius comes in explaining away the evidence that they are full of nonsense.