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figmentPez t1_j28aqkj wrote

There's an old question in writing: "What kills a vampire?" The answer is not garlic, or silver, or sunlight, or a stake through the chest. It's whatever the author decides kills vampires.

The security system, like a vampire, is fictional. It functions however the script says it functions, and the audience is not given a great deal of info about the system. We know it is sensitive, that it goes off when phones get notifications, and that the glass retracts on it's own. We are not told what triggers the end of the security lockdown, only that any lockdown Bron can't control is too much.

The glass goes down at some point, and ultimately that point is when it's convenient for the writer/director/editor for it to go down.

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drillgorg t1_j28gwsc wrote

Yeah I'm an engineer and I came to terms with the fact that most of the science in this movie is hand wavey. That's ok! It's not a movie about technology, it's a movie about mystery.

The napkin of course doesn't even try to make sense, they never even explain what the central idea of Alpha is. The fact that hydrogen gas would leak out of residential natural gas lines is a known problem, but it's an easily solvable problem for a spacecraft or a power plant. In fact a breakthrough in hydrogen tech would be world changing if you just plan for it the right way. Like was said above, the case opens and closes based on when the plot needs it to. The robot dog carrying the luggage was a gag but how did it load and unload the luggage? The fire extinguishing system conveniently came on only once it was too late for the plot.

And again, I don't mind any of this. It's a good movie which isn't about technology, it doesn't need the tech to make sense.

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leggpurnell t1_j28iz1n wrote

Sure they explained what Alpha was - on the napkin:

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