Hole in the Brain

The article, "The Woman with a Hole in Her Brain", describes a rare condition found in a 24 year old woman where the individual was missing a part of her brain: her entire cerebellum. She never knew she was missing her cerebellum until a CAT scan made it perfectly clear. As a child she struggled with learning to walk and talk and developed these skills later than most children. The cerebellum is the known as the "little brain" and contains 50 percent of the brains total neurons and controls voluntary movement and balance, which explains the poor coordination during the woman's childhood. This woman case, though rare and slightly confusing, shows how adaptable the brain is as an organ and how people can evolve to survive. 

Missing parietal lobe?

The parietal lobe is responsible for processing many sensory details. The parietal lobe is where things like, touch, taste, and temperature are handled. The parietal lobe is also responsible for things like spacial sense and navigation. If someones parietal lobe was somehow damaged or lost all together, the individual would be lacking in many sensory areas. The individual would likely not be able to sense or feel anything in terms of touch and the person would struggles to feel temperature. I don't see how survival would be possible for an infant who couldn't process touch but the chance that the individual could live still exist.