I know well that "will" and "be going to" have each different meanings. But I have a question:
Hypothesis X: The more the grammatical structure becomes complex, the less the distinction between them.
1) You'll have to...
2) You are going to have to...
The structures of these sentences are more complex than the ordinary "you'll" or "you are going to." Since 2) is too complicated to casually express the idea, it is avoided and you prefer 1), thus making 1) having exactly the same meaning as 2). This is my hypothesis X.
Do you think it's wrong?
Hypothesis X: The more the grammatical structure becomes complex, the less the distinction between them.
1) You'll have to...
2) You are going to have to...
The structures of these sentences are more complex than the ordinary "you'll" or "you are going to." Since 2) is too complicated to casually express the idea, it is avoided and you prefer 1), thus making 1) having exactly the same meaning as 2). This is my hypothesis X.
Do you think it's wrong?