Yea I think Gary seems to not want to take the fall alone on this one lol. I thought it was all him originally now he is like yea it was Will's idea he had written on some scrap paper i did the Script and M Knight helped co-write it.
Let's see how this one plays out for all parties involved.
Ya Gary was pushing the he did all the leg work line in a Collider interview.
Yes, totally legit. I think this is actually the first movie that Will has a story credit on. I wasn’t on any of his other movies, but to me, it feels like [there’s more] of his DNA in this that any movie he’s ever made. It was his original idea, he had a little one-page premise; not a lot of meat on the bones, but it was his original idea, and they wanted a writer to help him develop it. So they sent me the little logline and I went away and built the world out a little bit and pitched it to him. We developed it together, and then I went away and wrote the script. So the way the writing credits broke down, I think, is actually totally representative—story by Will Smith, and [director M. Night Shyamalan] and I wrote the screenplay together.
Then he goes on to say how the story Will pitched him was completely different from his idea.
Well, the original pitch that he had was literally a paragraph. And it was so broad that… it was something like, “A thousand years after humanity has been forced to abandon Earth and go live someplace else, a father and a son who are having a strained relationship crash-land on Earth, which has now become this inhospitable place.” And I thought, well, there’s a lot I can do with that; I can really build that out. So I went back and pitched with him. The final movie still totally conforms to that original description. The very first version that I pitched to Will was very different to what we eventually made, because through development, it changes and morphs a lot, and you always want to hone it and make it better. But a lot of Will’s DNA is in there and a lot of mine is in there. But certainly the movie that he set out to make, I think he made it.
What's puzzling is that he barely mentions M Night in the development process.
Also on DoneDealPro he was loving the congratulatory posts towards him. Saying nothing about M Night. Backtracking like a mofo now.

