It sounds like going to a Disney Land and complaining that all rides are easy. If you want tough and challenging rides go to SixFlags.
If you want to tackle tough challenges may be ruby/rails is not the ideal place. Perhaps learn C,C++ and implement faster ruby or javascript interpreter or implement a distributed filesystem in ruby or java. You can also contribute to the rails framework.
If you want to tackle tough challenges may be ruby/rails is not the ideal place. Perhaps learn C,C++ and implement faster ruby or javascript interpreter or implement a distributed filesystem in ruby or java. You can also contribute to the rails framework.