When Danny starts reading the plaque, his arms are behind his back. It then cuts to a closer shot of him and his arms are in front of him.
When Michelle tells Jesse she wishes she hadn't joined his group, her arms are crossed on the table. In the next shot, just before she gets up, her arms are at her sides.
A dinosaur doesn't fall apart that easily. They are very well bolted together.
In the museum, some kids are playing with a little dinosaur on display. That dinosaur would really be in a glass case.
Rebecca says that her brother's Nolan Ryan baseball card is now worth $2,000 leaving everybody in a state of shock and angst to get Joey's Nolan Ryan card back. Just because Rebecca's brother's card is worth two grand, does not mean Joey's is. Joey's card may not worth as much as $2,000.