I would like to know if the phrase "You did not lose weight because of this." is ambiguous or not. I think it could mean any of the following:
"This is the reason you did not lose weight."
"This did not make you lose weight." (independently of the "you" in the phrase having lost weight or not—I think that the phrase does not give information about this; it could be either case)
Similarly, the phrase "The airplane did not fall because of the presence of the dog" could mean something like: "The dog is a hero! Its presence prevented the airplane from falling!", or "The airplane did fall, but it was not because of the presence of the dog.", or "The airplane did not fall, despite the presence of the dog." Am I missing something? I am very confused about all of this.
Sorry, my English is very bad, I hope my question is presented clearly despite of that... Thanks in advance!