> the so-called “Dumb Zone” once a conversation starts approaching the limits of the context window.

My zipper would totally break at some point very close to the edge of the mechanism. However, there is a little tiny stopper that prevents a bad experience.

If there is indeed a problem with context window tolerances, it should have a stopper. And the models should be sold based on their actual tolerances, not the full window considering the useless part.

So, if a model with 1M context window starts to break down consistently at 400K or so, it should be sold as a 400K model instead, with a 400K price.

The fact that it isn't is just dishonest.