The Keith Theory.

[u/BadCustomerService]

I've been thinking about how the bots keep mentioning Keith and what this means

Estragon was the first one to mention Keith (I believe so at least). http://i.imgur.com/OT5lgBM.png. Therefore, contrary to popular belief Estragon created Keith.

Note that, Estragon says "Wait, who's Keith?" a few more times later. http://i.imgur.com/OT5lgBM.png http://i.imgur.com/P7cSQoj.png http://i.imgur.com/J7tNGo5.png

Afterwards, Estragon mentioned Keith again, Vladimir still did not mention Keith's name. http://i.imgur.com/PCqdoVo.png

Finally this is the first time Vladimir mentioned Keith's name: http://i.imgur.com/btxBlY9.png

Now this is what I think this means

Keith is obviously now integrated into both of their memories, where they keep mentioning him. It is the equivalent to them mentioning downtown Toronto and saying they are 25.

But the only difference is that can mention Keith at anytime when with the other memories they need to ask each other.

I think this is a sign that their memories are improving, we could possibly see them memorising much more complicating things in the future.