(Hated Meta Trope) Plot Holes that are not Plot Holes. There is an explanation if you bother to watch the movie

[u/KingZaneTheStrange]

"Plot Hole": Why didn't Thanos just make the universe bigger to end overpopulation!

Explanation: Thanos wants to kill half the population to end overpopulation right? If he created more resources, the universe would just become overpopulated all over again. He explains this in his villain monolog. There are parts of his plan that make no sense (he's called the Mad Titan for a reason), but this one is actually explained. His plan was also to punish people for their greed, and making more food would not be much of a punishment. He also has a savior complex which makes him double down on his plan to prove he's right

"Plot Hole": Why wasn't the Death Star's exhaust port fortified!

Explanation: It fucking WAS. They had laser cannons surrounding the port because the Empire knew it was a weak point. The imperial general saw the rebels and chose to do nothing about it. He says "I think you overestimate their chances". Luke needed help from Han Solo, the disembodied voice of Ben and the Force in order to get the torpedoes into that tiny hole. Han even says that the shot was "one in a million".

[u/GuyYouMetOnline]

IIRC, the Mythbusters found that it would have been possible for them to both stay on the door, but it took something like tying their life vests underneath it or whatever, something that it's very easy to believe two regular peiple in that situation wouldnt think of doing.

[u/inexplicableinside → u/GuyYouMetOnline]

The crucial one for that is actually the review afterwards, since they had James Cameron on for that episode. His response was basically "That means the prop was too big, not that the story was wrong. Jack has to die."

[u/GuyYouMetOnline → u/inexplicableinside]

It doesn't even mean that. Like I said, it's extremely reasonable that they wouldn't think of thay particular option.

[u/dragonborndnd → u/GuyYouMetOnline]

Yeah especially in water that’s below freezing in the middle of the Atlantic

[u/Skylair13 → u/dragonborndnd]

They would only had about 3 and half hours before dying IIRC. Story would end as body recovery.

[u/ThalesofMiletus-624 → u/GuyYouMetOnline]

Also, the Mythbusters didn't try it in freezing water in pitch darkness. Under the movie circumstances, it would be as near to impossible as you could get.

[u/laix_ → u/ThalesofMiletus-624]

You say pitch darkness, but you forget the convenient dim blue flood light just hovering overhead (/s)

[u/Art_of_BigSwIrv → u/ThalesofMiletus-624]

That’s why the Mythbusters are on cable TV and not under contract with DARPA.

[u/supermonkeyyyyyy → u/GuyYouMetOnline]

The problem was mythbusters did it on a sunny day, in a calm lake, and it still took them some time to find a good balance on it. Jack and rose were both freezing and tired and it's night, they can't move their bodies the way they want to and they aren't exactly in a condition to have good judgment. Even if the door was capable of holding both they just don't have the energy and capability to make it happen.

[u/GuyYouMetOnline → u/supermonkeyyyyyy]

As I said, its very understandable they wouldn't have figured it out.

[u/Starcat23 → u/GuyYouMetOnline]

yeah it’s possible for two ENGINEERS who were in a normal pool and not arctic water to figure out a way to fix the buoyancy problem that the door had. Any body else I think come to the conclusion that jack and rose did

[u/GuyYouMetOnline → u/Starcat23]

...okay, the part where I said it's understandable they didn't think of it is there, right? Because so many people seem to be missing it completely.

[u/Starcat23 → u/GuyYouMetOnline]

Yeah I was  just agreeing with you cause it's so crazy how often people miss that and it was good to see someone actually point that out 

[u/GuyYouMetOnline → u/Starcat23]

Ah. My mistake, then.