Continuity mistake: When Jason and Laura are flying the kite in one scene, there is heavy rain, thunder, and lightning and dark storm clouds shown in the sky, but on the ground showing the kids, the sun is shining on them (note the shadows).
Factual error: Jason mentions to Laura that someday there will be a "steam powered airplane." The word "airplane" did not even exist at that time - "flying machine" or so would likely be used during that era.
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Suggested correction: The WORD "airplane" already exist on that time, from 2nd half of 19th century, in french "aeroplane", check on pls.
