Student or Learner
I want to explain my problem with the following sentence.
"No-one knows if the excited stammerer knew of the earlier word, or simply made a mistake or if the story was just a clever marketing ploy of Lowe's."
We know that, when a clause starts with 'if', this clause acts a dependent clause. But, in the above example there has two dependent clause. Is it possible? Would anybody like to give some examples of this kind of sentences? At the same time, I have failed to realize the meaning of above sentence.
This is a different structure. Here, 'if' means 'whether'. "No-one knows whether ..."
"No-one knows if (whether) it was an accident or if (whether) he was murdered."
Yes, there's nothing wrong with the sentence. The meaning of your original isn't entirely clear, because there's something before it. But the structure is correct.