...because it can be changed. But so can documents and that has not stopped them from being accepted as legally binding. "Peopleworry that if e-mail can be altered or it can be changed, that in some way means it can't be relied on. Not so," Davies...
http://www.computerweekly.com/Articles/2001/05/23/180421/the-killer-click.htm
This interview with Joe Bageant comes from episode 149 of the C-Realm Podcast and was ably and kindly transcribed by Carol B. KMO: You are listening to the C-Realm podcast.
http://c-realm.blogspot.com/