10 Greatest Unspoken Sci-Fi Movie Plot Points
8. John Hammond Spared Expense... In His Walking Stick - Jurassic Park
The plot of Jurassic Park is set in motion by mosquitos - that is, scientists were able to extract dinosaur DNA from prehistoric mosquitos encased in amber, allowing them to ultimately produce their dinosaur "clones."
You'll also surely remember that industrialist John Hammond's (Richard Attenborough) walking stick is topped by a chunk of amber containing one of the aforementioned mosquitos.
But on the off-chance you know your mosquitos, you'll probably recognise that the mosquito trapped in the amber on Hammond's stick is actually an elephant mosquito, which are noted for not sucking blood. And so, there's simply no way that it would be able to contain dinosaur DNA.
While some have pawned this off as a mere movie mistake, that Spielberg simply chose to use a larger breed of mosquito so it would be visible on-camera, there's a better explanation that slots quite perfectly into the overall narrative.
It makes more sense that Hammond, a man who claims to have spared no expense on his park and yet much evidence points to the contrary, wouldn't dare place one of his precious, ultra-valuable prehistoric mosquitos inside his walking stick as an ornament.
It's far more likely that Hammond indeed spared expense, instead intentionally using an elephant mosquito - which wouldn't be of any practical use to him - while knowing that the overwhelming majority of people he meets wouldn't ever know the difference.