If you were to pluck this film from 1957 and release it today would it amass such a reputation?

I feel like if 12 Angry Men came out today it would be considered a good movie and maybe even get recognition at the Academy Awards. It'd get a good solid rating of 7.2-7.7 on IMDb I think.

Well it would get criticised by the woke crowd for not having any blacks or women, and the Oscars would shun it as a result. I think most other people of today would still appreciate the cleverness of the movie. A plot so simple, yet so effective and well written, just as I, as someone born over 2 decades after it was made, does. It's one of my favourite films.

The Shining is a bit different. The horror genre is full of many of the same sort of premises - slasher flicks, haunted houses, zombie outbreaks etc. and there are many copycat movies that follow the same plots. I can more understand how something like that wouldn't be given the same acclaim now as it might have been back then. Halloween would be the same. They'd cease having their sense of originality and influence that they had at the time and would suddenly start looking more just like generic films in their particular sub-genres.

This film didn't "amass a reputation" until a year or two ago. It wasn't even considered one of Sidney Lumet's Top 5 movies until VERY recently. Anyone claiming 12 Angry Men is Lumet's (let alone cinema's) five greatest films has obviously never seen Fail-Safe, The Pawnbroker, Dog Day Afternoon or Network. Strange and even a bit scary how the internet can create this kind of group think in such a short space of time.

By the way, The Shining was considered somewhat of a box office and critical disappointment when it was released in 1980.

12 Angry Men was remade in 1997 and 2007. I guess you can see how well they did by way of answer to your question.

In this fun thought experiment, are we taking in to consideration the *impact* said films had on cinema? That gets messy really fast, akin to the butterfly effect to time travel paradoxes.

While I love 12 Angry Men, I hesitate to call it a landmark film, possibly due to having not seen it in decades. But Halloween and TED (more so ED2) were indeed highly influential films. It could be argued the former popularized the slasher subgenre, and the latter slapstick horror-comedies. Tough to pull the cornerstone of a subgenre and ask it to stand up against a couple generations of films it inspired.

While I like to think these classics could stand on their merits alone, if I were to be brutally honest, I’m sure their place in history as being “classics” must account for some score boost.

This is an easy no. Most people have arbitrary lines for how old a movie has to be in order for them to enjoy it. Just imagine the sheer number of people that would reject this film just for being in black and white. Also the people can appreciate it, wouldn't have the same nostalgia for it, as it would now be something they saw later in life. I think some would still see it for what it is, but no it probably wouldn't have the same landmark film aspect that it has now.

I think The shining would still be ok even if were released today. Its still a Stephen King adaption (despite what King thinks), it would be considered a lost Stanley Kubrick movie, and he still has quite a following, and it features a young Jack Nicholson. This may or may not be true by the time the Shining is as old 12 angry men, we will have to see.