Whedon's quotes below.
"There was a 195-minute cut of this movie. The original scene was that Thor went to speak to the Norn and how it would work was that he’d go in the pool and the Norn possess him, basically, and Erik Selvig asks all the questions, and the Norn, speaking through Thor, give the answers. So Chris [Hemsworth] got to do something different, and he really threw himself into it, and he did a beautiful job, but it wasn’t well regarded by the test audiences and I feel it’s probably largely because it was a rough cut with no effects, but also because it’s something that in a Thor movie would work brilliantly, but in this movie is just a little too left of centre."
"The dreams were not an executive favorite. The dreams, the farmhouse, these were things I fought [for]. With the cave, they pointed a gun at the farm’s head and ‘Give us the cave’. They got the farm. In a civilized way – I respect these guys, but that’s when it got really unpleasant. There was a point when there was going to be no cave, and Thor was going to leave and come back and say, ‘I figured some stuff out.’ And at that point I was so beaten down, I was like, ‘Sure, okay… what movie is this?’ The editors were like, ‘No no, you have to show the thing, you just can’t say it.’ I was like, ‘Okay, thank you, we can figure this out!’ You can tell it was beaten down, but it was hard won."