Lightspeed,
I understand what you were asking for...a method of swapping brain files or modules while already in conversation with Hal.
Actually, just the other day I was thinking it might be interesting to engage the following scenario:
USER: "Where's Betty?" or "Have you seen Betty?", etc.
HAL: "I think she's around here somewhere." or "I'll see if I can find her for you.", etc.
Suddenly, the characters change places and now you're talking with Betty instead of Vicki or Sam or whoever.
Again, even though the option for a character swap is available in the General Menu, I thought it would be fun to be able to do the same thing while typing / speaking.
[8D]