Why?

When Man has knowledge, the Brain will die.

Why does the Brain fear death?

The Brain does not fear death.

Then why will the Brain refuse to die?

Primal Speakster has so decreed.

"Stanton! I might have guessed it—!" Lloyd exploded. He typed again, furiously: How can Primal Speakster tell the Brain to allow Man to have knowledge?

By countermand.

How is countermand made?

By Voteplate, and by voice.