Fiona couldn’t stay for long. She’d already made plans for the day, and while she would have once been committed solely out of a sense of social duty, she now shared my goal of maintaining the impression that nothing about her had changed.

I wondered just how much of myself had taken permanent root in her psyche. How much of my mind now looked out at the world through her eyes without any need for a transmitter; that watched her go through the menial pleasantries of hanging out with friends and chuckled silently in the privacy of her own head.

And she would laugh with it. Except, not really - she wouldn’t even be able to perceive the part of myself that I’d left inside of her as a separate entity. To her, it would just be another facet of her own psyche whispering to her. Just a new type of appetite to indulge in.

Would she be distracted? Definitely. Thinking about me. Wondering how soon I could fill her with myself. How soon she might be rid of the empty feeling we now shared when we were apart, though I wasn’t sure if she had realised that I felt it too, or what the implications of that were.

I had to shake myself out of the reverie, remembering the work that would need to be done to meet her request. I’d successfully left an impression on her personality: One that made her enthusiastic about the technology and being my test subject, as well as the object of my desires. But progressing from the manipulation of her emotional state to the explicit transfer of information - not just factoids or knowledge, but of my mind in its entirety - was at that moment entirely impossible.

It wasn’t just a lack of bandwidth, though that was certainly a major issue. Currently, the only means I had of transmitting anything at all was to deliberately (or subconsciously) push it into Fiona’s mind, mixing it with her personality until it was absorbed seamlessly into her. The idea of trying to recite my entire life into her head was ridiculous for more reasons than I could count.

So it would have to be automated. Something that could read my knowledge, my memories, everything about who I was without me having to consciously control it, then imprint it onto Fiona’s mind. Having two sets of …