Two short questions

I’ve been thinking again. Well, actually, I’m a PhD student, I’m always thinking. More specifically, I’ve been thinking about personal digital archivesagain. And I have two questions:

What does the archive gain in the transition from physical to digital?

And, (perhaps more importantly):

What does the archive lose?

No coherent answers yet, but I thought I better note the questions down. All part of the messiness of my PhD.