>> r = Stat.new
NameError: uninitialized constant Stat
	from /usr/local/lib/ruby/gems/1.8/gems/activesupport-2.0.2/lib/active_support/dependencies.rb:266:in `load_missing_constant'
	from /usr/local/lib/ruby/gems/1.8/gems/activesupport-2.0.2/lib/active_support/dependencies.rb:453:in `const_missing'
	from /usr/local/lib/ruby/gems/1.8/gems/activesupport-2.0.2/lib/active_support/dependencies.rb:465:in `const_missing'
	from (irb):1
>> r = User.new
=> #<User id: nil, username: "", hashed_password: "", enabled: true, last_login_at: nil, created_at: nil, updated_at: nil, member_id: nil>