Men can do, not necessarily help...

    'There are no servants here,' said Mother Dimble, 'and we all do the work. The women do it one day and the men the next. What? No, it's a very sensible arrangement. The Director's idea is that men and women can't do housework together without quarrelling. There's something in it. Of course it doesn't do to look at the cups too closely on the men's day, but on the whole we get along pretty well.'
    'But why should they quarrel?' asked Jane,
    'Different methods, my dear. Men can't help in a job, you know. They can be induced to do it: not to help while you're doing it. At least, it makes them grumpy.'

C.S. Lewis, That Hideous Strength