"We thought", "we perceived", "we discerned", "our understanding"...and they were wrong. What proved them wrong? Not a new discovery or mystery revealed but TIME.
It's scary that followers of the Jehovah Witness faith hand their lives over to men they don't know who profess to be inspired by God. Did God think, perceive, discern and understand these teachings too? Is God included in the "we"? If so, that raises it own set of questions.
But we know the leaders of the religion, their Governing Body, are leaning upon their own understanding which is influenced by wanting to maintain membership and saving face.
Unfortunately, most JWs will simply accept the Watchtower study article as given facts with nothing more to be considered.