two guys in their early forties don't know about computers???
I have not seen the movie, but are they trying to make us believe that two guys in their early forties don't know about Internet or computers? If that is the case it does not make any sense. I have never met someone that age who doesn't know how to use computers. People that age who have lived on planet Earth have been using Internet and computers for at least 15 years. If they were in their 70's maybe, but even lots of people in their 70's know how to Skype, surf and send mails.
The only way this situation could work is that the guys were time travelers who came from a time before the nineties.