A firewall operates purely in the physical world and relies on immutable properties of the physical world to function. To use it as a metaphor in the intellectu

A firewall operates purely in the physical world and relies on immutable properties of the physical world to function. To use it as a metaphor in the intellectual/political world (where nothing is immutable) is exceedingly unhelpful and I would say, often deliberately misleading. There is no 'firewall' inside Axel Springer, there is no 'firewalling'. Talk like that is pure nonsense.