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)
And so, our course began with a discussion of language and mind and it ends with a discussion of language and the brain. It would seem that the perisylvian area of the left hemisphere is indeed not only the primary organ of language; it also seems to underlie a broader range of cognitive powers that make humans unique.