[Now, that's a puzzlement, isn't it? And for a moment, Ten gently touches the device that is lodged into their brain. There is physical proof those six years happened - however, it's how these devices are able to rearrange the neurons in your brain. Specifically, the memory portions. Is a very scary thought as it seems to be what this device is for - but why is still rather unanswered.

Ten will buy that- given how Aaron said he came from a post-apocalyptic world and The Doctor has heard a lot weirder. A mouth pop - he does wonder if the device works in reserve. The right way - they share memories but could memories be manufactured and put into them? And it really wasn't a zombie bear but whomever is holding them here - cut his arm off but left memories of that. Entirely possible.

There's a hardy arm pat over Aaron's shoulders.]

It would take awhile but I could manufacture a bionic arm for you.