I cut and pasted two small sections of the broadcast in the following video clip. In the first 20 seconds he describes how truth is concrete and how Jehovah is the "revealer of truth", yet on the second half of the clip he explains how our understanding of truth in modern times is fluid and imperfect.
If this is the case, why can't we say Catholics are not in the process of also "understanding truth"? What about Protestants, Muslims and Buddhists? Can't they just be in the process of understanding truth too? Why does only the governing body have the right to be "imperfect" and "progressive" in their understanding of truth?