Carnegie was in Scotland in June 1892, when Frick, his partner, locked the disgruntled members of the Amalgamated Association of Iron and Steel Workers out of the Homestead steel plant.
"It would be our hope and desire to have a network partner locked in very shortly," he said, "so that the plans could continue uninterrupted".
Dr David Miller at the University of Leeds thinks the secret could be that the genetic keys in their sperm don't quite fit their partners' locks.
Only then one might proceed to understand the ways in which secularism and religion, reason and insanity, modernity and Islam have all been partners locked in step on the road to the present day.
But there isn't a shred of preciousness in the playing — or perhaps just a shred of it, as on their two versions of Antonio Carlos Jobim's "Retrato em Branco e Preto" — and the partners lock into their dialogue with immersive focus and grace.
In the 1980s, McDaniels' group, Run-D.M.C., and Yauch's group, the Beastie Boys, were tag-team partners locked in combat with music's status quo.
While many women on the receiving end of sexual violence don't want to see their partners locked away for years because they love them or are just financially dependant on them, I have to say I think this is a discussion worth having.
This abounded in marvelous give-and-take details, little flourishes of footwork that came from her, then him, then her again, and sudden skips from either partner while locked in each other's arms.
A man went on a date with a new girl while his current partner was locked up in another room, painting a mask on her face and crawling on the floor.
Morgan's broken leg has given Billy Vunipola a chance at number eight, while in the second row, where England have been hit hardest by injury, Bath's Dave Attwood will partner Saracens lock George Kruis, who has not played for three weeks after being banned for a dangerous tackle.
