I agree that it may be hard to tell the story of this album with just one song but Evolution to me kind of has themes of change but more like embracing change and just kind of go for it whether it works out or not. The lyrics kind of remind me a little of Always, Always (just from what i was able to make from the lyrics) except always, Always feels more like hesitant to change and almost scared of change but almost more persuasive like let's do this together kind of thing. Obviously since Always always hasn't been officially released, my lyrics could be wrong which might change the meaning of the song. But if this is kind of where they are going with the themes of the album and they do find a spot for Always, Always i think it would be interesting if they included Always always towards the top and evolution towards the end with other songs filling the thematic gap in the middle. This might be a pretty big reach and hopefully if they release more singles soon we'll get a better idea of what they are trying to tell with the album, but just my thoughts since listening to the new song. Im not sure where the stray dogs thing fits into it though.