Chronicling All Existence -

For the sake of argument, let's assume that everything is recorded in some form or another.  What would you participate in (assuming our technological capacity puts us at the level of viewer and not direct participant), or view?  What does this say about our experience of time?  Why are we limited or not limited in how much we can understand a particular viewing?  What about viewing another experience gives us insight into it?  Why should we be able to understand it?