public function validates()
	{
		if ( ! isset(static::$_rules) or count(static::$_rules) < 0)
		{
			return true;
		}

		$vars = $this->_data;

		// Set default if there are any
		isset(static::$_defaults) and $vars = $vars + static::$_defaults;
		$vars = $this->pre_validate($vars);

		return $this->run_validation($vars);
	}