Character mistake: The newspaper article states that Lucinda was thirty-three at the time of her death in 1988. However, that would make her just four years old when she wrote the time capsule note in 1959 - four years old in the 3rd grade?
Character mistake: The blackboard in the opening school sequence shows the phrase "The quick brown fox, jumped over the lazy dog" this is incorrect. It should read, "The quick brown fox jumps over the lazy dog." The point of the sentence is that it contains all of the letters of the alphabet, but in the first example, there is no 's'. (00:03:07)
Answer: It is a rock from the ground of the final location on the list, where the spaceship has landed to transport Caleb and Abby to their new home. It is merely a clue as to where they should go on the day of October 19th.
Katie..x