Library 2.0: revolution or evolution?

I think the movement of libraries to incorporate the "mushy" or "squishy" Library 2.0 is more of an evolution than a revolution--in part due to the pace of its incorporation, which is various amongst institutions and library staff. Some libraries, especially those in more affluent, modern, academic, or those in areas with larger populations may be able and willing to incorporate technology and social network more quickly and effectively than smaller, poorer, less populated or more rural public libraries. School libraries also vary greatly as to what they are willing and able to incorporate. Nevertheless, all libraries are going to have to respond to the needs of library patrons and users by remaining current, aggregating information, and remaining true to their mission to serve their population, which in every case, is going to necessitate at least some aspects of Library 2.0.