Cf. Hal Clement's Hot Abyormenites, which use an internal fatty lense treating sound just like our eyes treat light.

Must be treating the distributed vibration sensors as an acoustic phased array to computationally simulate a lens in the brain. You could probably do that with relatively slow sound waves, and it's how sonic cameras actually work.

How to make it work: the government seizes all assets, sells them to determine their actual (rather than theoretical) monetary value, and then deletes that money from the national treasury.

I got s fancy new shirt for my birthday. :)