DUDE, you need ur own facts to back it up. Simply saying Bullshit is horrible horrible argument. When we are talking about who contributed what, we are talking about this thing called FACT, not an analysis. And btw, the quote is not unsourced. This is what Ian Watson said too,

lol dude, its ok. you lost this argument. You can't just deny facts and be like "I call bullshit" when we know the ending was more kubrick than Spielberg. Just because YOU don't think kubrick would have done it doesn't make it not true. Its a stupid defence.