In exercise 9 of the first Ruby section, I am able to see an output by simply typing "Sean".downcase without having typed or . Is that normal or a codecademy thing?
Hey, that is because of the Ruby interpreter. It evaluates everything you type. You can try it out in your computer if you have the interactive Ruby interpreter called IRB:
nbk@somewhere:~/dev/Ruby/codeacademy$ irb irb(main):001:0> "Sean".downcase => "sean"
You can think of it this way: everything in Ruby is evaluated.