It’s 39 boring minutes of three boffins that don’t understand strategy. Things do become obsolete. Horse Cavalry for example. The real issue is how do they become obsolete? Usually, it’s because the enemy designs a method that makes them ineffective. For example, our Future Combat Systems Rumsfeld was such a big fan of became obsolete before they were even off the drawing board. How? China fired a satellite killing rocket in to space. No satellites.. no FCS. Too easy.
One of the inherent problems with strategy is “form”. When your strategy or arms takes a concrete shape, the enemy can find it’s weakness and exploit it. So, why not be “formless”. Let the enemy guess.