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Another movie review with only mild spoilers.
This time it's for "tenet". It's a movie about a world where tech has been invented to reverse the flow of time for chosen objects. Other than the interesting setting, it is just an American action movie with everything that entails.
Scientific accuracy/inaccuracy:
The only blatantly inaccurate part about the movie was when they aparantly forgot that "reverse time travelling matter" should just combine with forward moving matter and annihilate. But if the movie kept to this aspect, you literally couldn't have a movie (cause everything would explode and die).
I do like that they otherwise kept the techno babble and incoherent nonsense to basically 0. The tech is basically magic. You don't need to make up some bs about how it works.
Action scenes:
Cool, but mostly confusing. A lot of the action I just couldn't follow. Partially cause I was zooted while watching the movie. And partially because the movie has no fucking chill to let you process what is happening on screen.
Sometimes it's fine. I do like how often, the movie will just omit showing you things when it's easy to figure out what probably happened.
Plot:
The plot is basically action movie protagonist saves the world. And I don't think he even has a name. He's just called "protagonist". I did think it was sad that we didn't see the core concept of backwards moving shit be explored more. The most they do with the concept of backwards moving objects is set up a couple of plot twists and shit.
Characters:
A couple of fairly serviceable characters forms the main cast. But most of their backstories are just ignored. For example, why is our protagonist so ... posh? I think he also just randomly speaks Japanese at one point?????
Conclusion:
Watch this movie. It's fun that makes you go "woah, that's funky" a few times. Be sure to be high. It helps.
That movie has famously quiet dialogue. Side note, I had a friend that had "Tenet Understander" as their Twitter display name and it made me chuckle every time I saw it.
In Feyneman diagrams, particles traveling in reverse time is the representation for antimatter but I dont think its literally matter in reverse (just makes for a convenient diagram). They do have some weird stuff about entropy in reverse, like your lungs can only breath air that's also going in reverse so you have to bring your own air source? And explosions instead of being exothermic were endothermic? But a bullet still fucks your up. I dunno, its not really that kind of movie. Also the implications with reverse time objects has on free will is touched on very briefly but hand waved - "it wouldn't have moved if you hadn't put your hand there."
Some fights or action scenes you get to see twice, through forward and reverse time versions. I still didnt get it.
In our universe, yes. Bit in the tenet universe particles travelling back in time are explicitly antimatter, and one of the characters even brings up feynman.
They also mention that you should not touch your forward moving self because you will annihilate. This implies that they think your specific particles must collide (forward and backwards moving) for annihilation. However, no such rule exists for matter and anti-matter in our universe.
After thinking, I think the endothermic explosions actually make sense. From the perspective of the reverse moving people, the fire is "unwinding" just like the bullets are unshot and objects unfall. An unwinding fire would take away heat instead of giving it out.
So if a reverse mover got into contact with an unwinding fire, they would go from room-temperature to freezing.
From the forward mover perspective, it would look like the reverse mover started off frozen, then was hit by fire which thawed them out.
I think the reverse air moving thing also makes sense. You probably don't want reverse moving particles mixing inside your body. Unfortunately, I don't get why the particles would just pass through your lung membranes.
Yeah. The whole plot of the movie just assumes that free will does not exist. The characters even remark that them being alive means that they already won in the future. They just have to reenact their path to victory. But the protagonist also constantly asks people "what if they could change fate" or something. And like, they never even get closer to changing their fates lmao.
At least it's more consistent than if they actually did manage to overcome the laws of physics with the power of friendship.