Your two brain halves cooperate only because of one 200-million-fiber cable. Sever it and each hemisphere runs its own agenda — same skull, two minds that stop telling each other anything.
Send this to the person whose left hand never knows what the right is doing.
EXPLAINED (ACCURACY-CHECKED)
The corpus callosum is a commissure of roughly 200 million axons connecting the cerebral hemispheres; when it is cut (callosotomy / classic split-brain studies) each hemisphere can process independently and inter-hemispheric transfer is lost.
Established neuroanatomy: corpus callosum ~200M axons; classic split-brain / callosotomy findings (Sperry, Gazzaniga) show independent hemispheric processing after section.
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