Ok, I'm a total nerd for probably even coming up with this.
A lot of people are suggesting that it has something to do with space.
In an early LP song, Dedicated, there's a line about a space odyssey monolith, which refers to the science fiction movies 2001: A space Odyssey and its sequel 2010. These movies center around a computer named H.A.L. and the evolution of man kind.
Also a few weeks ago Mike mentioned that he and Brad were in the studio listening to Dark Side of the Moon by Pink Floyd. The main character in 2010 is a Doctor Heywood Floyd.
I'm probably totally reaching here, but its a possibility that maybe they are doing something centered around the plot of these films?