The framing suggests that the asker did like the movie. It makes it harder to answer in the negative because some (most) folks have an instinct to achieve social consensus. I think it's a society-wide learned defense mechanism against tribalism in the presence of allies. Maybe a good test for these sorts of questions is to add the word "also" at the end.

I think it can lean either way depending on how you ask it ("Did you like the movie??").

However, regardless of leaning, the non-leaning version feels like it will generate more interesting responses, while "Did you like it?" is likely to elicit a "yes" or "no".

‘Like’ is a positive verb so it’s not a neutral question.

More importantly it directs you to frame your reaction on a simple like-dislike axis, when the full spectrum of your opinion is probably more complex, and eliciting that yields a better conversation.

I am with you here, it seems perfectly neutral question to me.

But this reminds me of a time when I went to movies with some younger family memeber and their friends. After the movie they asked each other if they loved the movie. To me love was really strong word. I wanted to say I liked it, not loved it but then I thought no need to be negative here. So I just said yes.

So when people ask did you like the movie, many people subconsciously say yes even if they disliked it.

You are right that there are two acceptable answers to the question. How does this compare to the number of acceptable answers to the other question?

It's also overly simplistic and tends towards binary outcomes. Yes. No. Conversation over.

It was a two hour movie, surely the answer is more complicated! Caveat: does not apply to all movies.

My favorite way to ask this question is “What did you (dis)like about the movie?”

Makes the question more open ended and encourages the person to dig deep for answers and think critically.

"Did you like the movie?"

"Did you hate the movie?"

The idea is that people are more comfortable answering yes to a yes/no question.

The problem with the question is that it reduces an infinite dimensional space (all the things you could have thought about the movie) into a single scalar value. Your mind is likely to be preoccupied with performing that projection which is fundamentally uninteresting.

It’s like asking “Is the pharmaceutical industry good or bad?” vs. “How should the pharmaceutical industry participate in society over the next 20 years?”

It's ok to ask follow-up Why questions.

What do you think about follow-up questions?

But the opening of a conversation influences the rest of it. It's like the old experiment about guessing the number of countries in Africa.