Basic evolutionary theory, with some quibbling over details, has widespread acceptance in the scientific community. So do the theory of relativity, the theory of gravitation, and the theory of the heliocentric solar system. If you have taught your children otherwise, you are curtailing their ability to operate in the world as informed adults.
His last sentence is true whether evolutionary theory is or not.
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Update: 41 comments in and everyone is being very nice. Thanks and keep it up!