acsenray, the difference between will and shall is the same difference as between would and should.
I would go to the bank, but I can’t. (I want to.)
I should go to the bank, but I won’t. (I need to.)
I will go to the bank, because I want to. (I want to.)
I shall go to the bank, because I have to. (I need to.)
Of course, American English has tended to make “shall” obsolete, and substitute “will” for both meanings.
In more structured uses (like legal situations), shall serves to distinguish things that are required.
Will is a description (this is what happens), shall is a proscription (this is what must happen).
Alex_Dubinsky, you’re a bit unfairly characterizing what acsenray has said. You are paraphrasing his remarks with what are to your ears semantic equivalents, but those semantic equivalents are not shared by acsenray. The you are ridiculing acsenray for your paraphrase of the remarks rather than what acsenray means.
Alex_Dubinsky said:
Cite where. That’s not what was said.
What was intended was that your list of probability is too finely parsed and too specific in intent. People may mean different values of maybe, but they are not necessarily consistent in word choice to convey that level of probability. They might in one context use “might” to suggest something desirable but difficult, and in another case use “might” to indicate something very unlikely.
Again, a mischaracterization. acsenray is saying he doesn’t equate “will” with “gonna” vs “shall” with “'ll go”. He agrees there is a semantic difference in your paraphrases, but he doesn’t relate that semantic difference to the words “will” vs “shall”.