Jeffrey -
See my post at the topic: "Wilderness is ..."; I think it matches or comes pretty close to your line of thinking. Basically, solitude is without people (so I agree, you could actually get some at the Mall at the right time), but wilderness is without impact ... or without certain kinds of impact (because a tree falling and then its gradual decomposition are both examples of impact). I love a little solitude in the wilderness, but more often I like to share it with wife, kids, bud. Let me know what you think at "Wilderness is ..."
- Talus