You go by the name of Moses yet you obviously didn't look up the verse I posted. Let me put it here to save you the effort.
And as he was praying, the appearance of his countenance was altered, and his raiment became dazzling white. And behold, two men talked with him, Moses and Eli′jah, who appeared in glory and spoke of his departure, which he was to accomplish at Jerusalem.
According to your interpretation of Ecclesiastes, Moses could not have possibly been having that conversation with Jesus, but since Scripture plainly states that he was, we can safely assume your interpretation is off.
In 1Cor 15, Paul says the following :
When the perishable puts on the imperishable, and the mortal puts on immortality, then shall come to pass the saying that is written:
“Death is swallowed up in victory.”
“O death, where is thy victory?
O death, where is thy sting?”
The sting of death is sin, and the power of sin is the law. But thanks be to God, who gives us the victory through our Lord Jesus Christ
and in Philippians 1 he states:
If it is to be life in the flesh, that means fruitful labor for me. Yet which I shall choose I cannot tell. I am hard pressed between the two. My desire is to depart and be with Christ, for that is far better. But to remain in the flesh is more necessary on your account.
If the dead know nothing, why would Paul desire to die?
In Rev 6 we read the following:
When he opened the fifth seal, I saw under the altar the souls of those who had been slain for the word of God and for the witness they had borne; they cried out with a loud voice, “O Sovereign Lord, holy and true, how long before thou wilt judge and avenge our blood on those who dwell upon the earth?”
They certainly don't fit your understanding of Ecclesiastes either. I also wonder how you square your interpretation with 1 Samuel 28.