I submit to you this list of movie tropes that should- but never will- end immediately.

1) CPR: Cardiopulmonary Resuscitation seems to work 90% of the time in movies. CPR is the Hollywood deus-ex-machina solution for gunshot wounds, car wrecks and drownings (to name a few). However, in actuality, CPR barely works less than 43% of the time. Not to downplay CPR, it’s saved lives. It’s just infinitely more complicated.

2) Gun Crosshairs: In movies like American Sniper, we cut to the POV shot through the scope and see the crosshairs settling directly onto an enemy’s body. However, real snipers will tell you (and their spotters) that they hardly ever aim directly at the target. Because of science…

Wind, distance, gravity and the Earth’s curvature- called the Coriolis effect- factor in. Soldiers say that they’ve had to aim some fifty-feet to the west and thirty degrees upwind in order to hit their target.

I get why Hollywood just has the crosshairs focused on the bad guy. But wouldn’t it be cool to learn about how they factor in the curvature of the Earth before pulling the trigger?

3) White-washing: This may not seem like a technical cliche but it happens so often that it is one nonetheless. And since Hollywood’s founding. We have Charlie Chan in 1931 to this year’s hit Dr. Strange, casting a white woman to play the Ancient One- who’s supposed to be Tibetan.

There’s also the epidemic of casting English actors as ancient Egyptians, like 2014’s Exodus. And completely ignoring Latinos, like the Academy Award winning film Argo, where Affleck plays Tony Mendez. Side-note: that movie nearly completely leaves out the Canadians who actually saved the Iran hostages.

4) Bombs with Timers: not a thing.

5) “We got company”: Stop using this line, Hollywood. Star Wars, Indiana Jones, and any jet fighter movie has killed it.

6) “Over and Out”: not a thing. Walkie-talkie speak is either “Over” or “Out”. Overmeans your end of the message is complete. Out means the conversation is done. If used together you would confuse your radio partner, causing chaos and the bad guys would win.

Comment below with your favorite Hollywood cliches!