During the Dublin sessions, Eno was sent tapes of the previous two months' work, which he called a "total disaster". Joining U2 in the studio, he stripped away what he thought to be excessive overdubbing. The group believes his intervention saved the album. Eno theorised that the band was too close to their music, explaining, "if you know a piece of music terribly well and the mix changes and the bass guitar goes very quiet, you still hear the bass. You're so accustomed to it being there that you compensate and remake it in your mind." Eno also assisted them through a crisis point one month before the recording deadline; he recalled that "everything seemed like a mess", and he insisted the band take a two-week holiday. The break gave them a clearer perspective and added decisiveness.