In other languages, such as Ruby, runtime looks more like a busy market. Most language constructs are still there, buzzing all around. You can even walk up to a construct and ask it questions about itself. This is called Introspection

introspection.rb

class Board
  def initialize(text)
    @text = text
  end
  
  def display
    @text
  end
end

my_object = Board.new("Today is monday!")

# Start interactive Ruby session
require 'irb'
IRB.start

# introspection section
my_object.class                             # => Board
my_object.class.instance_methods(false)     # => [:display]
my_object.instance_variables                # => [:@text]