second call for feedback on Naiad design

[Norbert Hartl]

Hi,

I didn't follow he whole discussion but read Craigs
summary. There are two things I want to know:

Theoretically I like a lot of the ideas. Practically I
don' want to deal with two things (subject and history).
It reads a lot like I need to start two different images
to be able to start working. Are there ideas how to hide 
the fact that there are two things involved? Or is there 
even the possibility to have the history memory and the
subject memory in one thing? Don't get me wrong I really
like the idea to have these separated. But I want to 
separate them later not at first.

I like to edit my history (and also remove versions). Is
there a definition of a fallback behaviour of the history
memory if a version is missing?

thanks,

Norbert