I always thought the line you used as an example of something deep was a rip off line from EV.....I had 2 different history teachers years ago who had this quote posted up in their classrooms.
"Those who cannot remember the past are condemned to repeat it" - George Santayana
"He who forgets...will be destined to remember" - Eddie Vedder
Doesn't matter, love that line, love that song.
I think the lyrics are all up for interpretation and I am sure whomever wrote the song might have a different explanation than we as fans imagine.
I think that Unthought Known is awesome lyrically -- I know it is the popular thing to do here to slaughter anything 'Backspacer' but I not only like this song I find the lyrics to be meaningful on a number of levels. Song has a number of examples in my opinion.
I loved that article where he spoke on this topic though, thought it was great.
The smallest oceans still get....big, big waves
Berkeley 10/31/93,Indio 11/5/93,San Diego 11/7/95,Irvine 6/3/03,LA 7/10/06,Universal City 10/7/09,Long Beach 7/6/11 (EV),Vancouver 9/25/11, Philly 9/2/12,Wrigley 7/19/13,Philly 1 & 2,10/21/13,10/22/13