*Thomas, Dave: -Dave Thomas, as one of the authors of the Agile Manifesto, understands agility. As the author of Programming Ruby *, he understands Ruby. And, as an active Rails developer, he knows Rails.

*Thomas, Dave: -Dave Thomas, as one of the authors of the Agile Manifesto, understands agility. As the author of Programming Ruby *, he understands Ruby. And, as an active Rails developer, he knows Rails.