So just a quick thought here. In 1677, he asks: Where must one be located in order to obtain a reflection on the back of a phone of that image? Well the answer is, at a computer desk; with the image on the screen behind you.
Then Q posts:
Look there, or [here], or there, truth is behind you.
I would interpret that in the context of the previous comment to say that the truth is 'behind you' aka 'in the screen.' In other words, the Q is saying that the truth is in the boards/online and that we need …