I can bet you any money she is getting coached on what is said.
Would you care to differ?
1. People who thought they were smart said the same thing about Reagan. Those people were irrefutably wrong.
2. Mrs. Palin at times invokes a simplistic or 'folksy' tone, (I refer to it as "charming" or "down-to-earth"), thus so-called smart people miss the message and think her not "intellectually" able.
3. You cannot prove your assertion any more than I can prove that you are a vile little man/woman bent on bringing Mrs. Palin down by whichever means, however malicious, you can muster.
Now, have a good day and enjoy your standing in the David Frum Fan Club.