On the contrary, to me, Acme::Playmate is a very good example of a simple object, and it encapsulates at least those three attributes you had in your sample code. Most importantly, the class does abstract an entity the author perceives.

I'm with Ovid on this one. The example under discussion is just a plain old data structure dressed up in a little OO clothing. If you remove the bless line from the constructor, you get back a plain ordinary hash reference that has *all* of the functionality of the so-called object. It is useless OO, as is the following:

#!/usr/bin/perl -w
use strict;

sub whatever {
    bless {name => 'pg', forum => 'perlmonks'}, 'NonObject';
}

my $obj = whatever();
print $obj->{name},"\n";
print $obj->{forum},"\n";

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1.Everything in the real world is an object (class is the collective abstraction of object).

Everything in the real world is *not* an object, and, conversely, a good many of the objects we create in our programs are 'objectifications' of process (not that that is a bad thing).