Strange because I've always seen the saurdukhar/fremen as a literary interpretation of a real aspect of human nature - the ability (of some) to perserverve and

Strange because I've always seen the saurdukhar/fremen as a literary interpretation of a real aspect of human nature - the ability (of some) to perserverve and excel in stressful/difficult situations. Some real life examples I've pointed too are the ghurkas in WW2 or Russian hackers.