S3 Local Environment Approach, wiithout environment

Question

I'm going through the following S3-Tutorial: http://www.cyclismo.org/tutorial/R/s3Classes.html

I like the "Local Environment Approach" (and can live with its disadvantages). But I d'ont understand why there is the manual creation of a local environment. Why don't we just use the functions environment?

The following seems to workeven without the "extra" environment:

Person <- function(name) {

  name <- name

  me <- list(

    getName = function() {
      return(name)
    }    
  )


  class(me) <- append(class(me), "Person")
  return(me)
}

jan <- Person("Jan")
max <- Person("Max")

jan$getName()
max$getName()

What am I missing here?