How does Lyrical Ballads represent a summary of the Romantic Age?

I think that one could argue that the opening shots of
Romanticism against the Neoclassical Age are present in Lyrical
Ballads. Part of this would lie in the preface, which essentially states the
purpose of the Romantic movement.  The Preface argues the tenets of Romanticism,
defining in stark oppositional terms to its predecessor.  Poetry as an emotional
movement, written about the basic elements of society, and one that seeks to broaden the
subjective experience into the universal one are critical elements to both the movement
and how Romantic thinkers would come to see their work.  The Romantic Era's ideas did
not deviate that much from what was featured in both the work and the Preface to it. 
This helps to bring to light how important the collaboration between Wordsworth and
Coleridge was in ensuring that individuals understand the movement's aims and remain
true to them.  In this light, I think that a summary of Romanticism can be contained in
the work.  While other thinkers like Byron, Shelley, or Keats might have taken
Romanticism into their own directions, much of their work can be seen in
Lyrical Ballads in terms of poetic theme, devices used, and overall
timbre.