I'll go even further.
This "old light" "new light" shite really grates on me.
If "new light" comes out and replaces "old light" who got the "old light" wrong?
Does Jehovah, with his magical Holy Spirit, inspire the GB as they come to decisions on doctrines?
If He does then Jehovah is the author of the wrong doctrine, thus a God of falsehood.
Or is it a case of the GB are students of the bible, and they issue a doctrine they believe to be correct and then Jehovah corrects the doctrine if it is wrong?
If THAT is the case then how do JW's know and trust what is the current teaching is the correct one? What if life doctrines are involved like blood and they are currently wrong? How can the GB demand 100% obedience IF the above is the way it works.
To a JW it can only be one of the two situations above...either God is the author of every doctrine coming from the GB and he is getting it wrong (so who wants to follow a God like that) OR it is the GB getting it wrong and Jehovah corrects them but then you simply can never ever trust that any doctrine is right.
Either way, you wouldn't be a JW...you either follow a dick of a god or you are following men.
PS.. the two situations are the only explanation to a JW as to why old light is wrong. We know very well there are other reasons like its all bollocks but I am on a JW level of thinking to highlight the point.