I’m inclined to side with TreacherousCretin on this one. “Eight Days a Week” is, of all the songs on this album, the one that’s squarely in the mold of the classic early Beatles sound, but that’s a sound they were in the process of outgrowing, and unless I’m misremembering, it doesn’t do anything particularly interesting or new with that sound. So, while it’s a perfectly good song, it is to me perhaps the most dispensible song on the album.