Although at first glance, ```&&``` and ```and``` are the same, there's some subtle gotchyas, so "good Ruby style" is to avoid ```&&``` unless you specifically need order precedence. More info: http://devblog.avdi.org/2010/08/02/using-and-and-or-in-ruby/  In this case it doesn't matter, its just one of those "good habits" to get into