It never ceases to amaze me how the WTS can continue to arbitrarily pick and choose what they will interpret as literal, and what they will interpret as figurative. Some "days" are interpreted as literal days. Some are interpreted as a year. Some are interpreted as simply long periods of time.
This is very convenient. With a simple stroke of the pen, they can say that certain passages say what they mean, and others mean something other than what they say. To the Watchtower Society, the Bible can be turned into one big Rorschach card to be interpreted however they see fit.
Why bother even puting the doctrines and "current understanding" in print? Just report the doctrines and "current understanding" on a giant electronic board that can be changed the same way stock prices are reported on Wall Street.