Tailkinker

Corrected entry: Ben's mother recognises the symbols on the wooden plank as being Olmec and proceeds to translate their meaning. Only problem is that, to date, only one example of Olmec inscription has been found and it has never been deciphered.

Correction: This is called "fiction". If the film-makers wish to portray a character as capable of deciphering Olmec, then it's irrelevant whether such experts exist in the real world, in exactly the same way as, say, a superhero or a scientist working on a fictional technology can be portrayed without them actually existing in reality.

Tailkinker