I think the same way, I would expect something like the following from a book author: "Since we're going to install Rails 3 which is newer than the version pack

I think the same way, I would expect something like the following from a book author: "Since we're going to install Rails 3 which is newer than the version packaged/available in Ubuntu 10.10, we will do a separate install which is not compatible with the package manager, etc."