Popeyesays said:
"- Did Joseph Smith produce such a theologically and logistically complex work all on his own at such a young age and with such little formal education?"
First of all, I don't find it complex--neither theologically nor logistically. Conjecture about the Lost Tribes of Israel certainly pre-dates Smith.
Conjecture concerning the Lost Tribes is only a miniscule part of what I referred to as the complexity of the Book of Mormon. This topic is worthy of its own thread, but to be short, the language, cultural content, doctrinal consistancy, writing styles, etc, found in the Book of Mormon present an extremely complex piece of work, especially for a young man just past his teenage years and with very little formal schooling.
"- In light of Christ's instruction: "by their fruits ye shall know them", how do you reconcile your belief that Joseph is not a true prophet -- his efforts produced many good fruits?" The fruits of Mormonism are the fruits of Moses and Jesus.
While some of the fruits of Mormonism overlap with the fruits of Moses and Jesus, it also has its own unique good fruits. In both cases Mormonism is a tree with many good fruits and as Jesus clearly taught: a false prophet cannot produce good fruit.
Smith makes no claim to be a major Prophet on His Own authority like Moses and Jesus did. The Book of Mormon is merely "another testament of Christ". That makes Smith only a minor prophet like Malachi or Habakkuk.
I'm not sure what you mean by a "major" Prophet, but Joseph certainly claimed to be a prophet of God. Even if Joseph was what you call a "minor" prophet like Malachi, does that not mean that the doctrines he taught came from God?
"- How would you identify a true prophet?" First He has to make a claim on His own authority, then you judge Him by the fruits of the revelation. Smith never made any claim on his own behalf.
Joseph did claim to be called of God and a prophet of the same -- he claimed to receive authority directly from heavenly messengers. In what way do you judge the fruits of revelation?
"- Where then are the true prophets that Amos and Paul promised would participate in the ministry of the true gospel of Christ?" If you refer to the "reswtoration" evidenced by the current Prophet and APostles of the LDS, then I give them no authority at all if I give Smith no authority.
No I'm talking about the promise Amos made that "the Lord God will do nothing but he revealeth his secret unto his servants the prophets" (Amos 3:7) and the promise that Paul made that prophets and apostles would be needed for the work of the ministry until all come in the unity of the faith in Jesus Christ (see Ephesians 4:11-13).