When does an experience begin and end?

Friend Bob Jacobson is putting together a book on experience and he's looking for some outside input. He's posted five questions at Total Experience and I've included the links below. If you have some time, take a look at them and please head over and give him your thoughts.

I'm asking these questions as part of my research for a book in progress on the design of experience. (It’s coming along quite well, thanks.)

Please visit the blog and leave your answers there as Comments. They’re much appreciated — and should be interesting reading, individually and collectively, as they accumulate. Direct your friends there, too: in this case, the larger the sample, the better the results.

My five questions are:

1. When does an experience begin and end?
2. What are the dimensions of an experience?
3. What role do setting, memories of prior experiences, and the larger environment play in the character of an experience?
4. What metrics can be devised and applied, or already have been, to take the measure of an experience?
5. Can an experience be shared? If so, among whom and how many individuals? Is the experience they share the same?

Thank you for sharing your wisdom.

Link: 1. When does an experience begin and end?

Link: 2. What are the dimensions of an experience?

Link: 3. What role do setting, memories of prior experiences, and the larger environment play in creating the character of an experience?

Link: 4. What metrics can be devised and applied, or have been already, to take the measure of an experience?

Link: 5. Can an experience be shared? If so, in what way, and among whom and how many individuals? Is the experience they share the same?