The top isn't a mess of food. This is largely dependent on what you cook. Fish skin sometimes gets cooked on, glaze bubbles and chars, oil lights on fire and the top surface chars. Something like shrimp, tomato, or sausage will be fairly clean though, and nothing will cook on to the top.
Impairment of language, usually caused by left hemisphere damage either to Broca's area (impairment speaking) or Wernicke's area (impairing understanding, damage in rear parietal/temporal region in the left hemisphere)
The theory is that the left side of the brain controls the language function. When the cards are in the right hand the left hemisphere recognizes and can vocalize the word cards. The right side cannot speak the word because speech is not its function. Split Brain Syndrome also has an impact on the personality.