Simplify the following text for a Grade 13 native English-speaking person.
Original: The British scientific establishment was at the time enamored with the hoax Piltdown Man , which had a large brain and ape-like teeth â `` the exact opposite of the Taung Child â `` and Dart 's interpretation was not appreciated for decades .
Simplified: The British establishment was at the time enamored with the hoax Piltdown man , which had a large brain and ape-like teeth -- the exact opposite of the Taung Child -- and Raymond Dart 's finding was not appreciated for decades .