I think the nice thing about Rails is that the core committee tries to make the core framework slimmer by removing features and stuffing them into gems. It's n

I think the nice thing about Rails is that the core committee tries to make the core framework slimmer by removing features and stuffing them into gems. It's nice that Rails keeps features out that might be considered "core" by others, like authentication. It allows new "core-like features" to be adapted by the community.