>>2) exactly how does one "blaspheme the Holy Spirit"?
One thing we have to remember is that to blasphemy, you have to actually speak the words. If you think the thoughts your well on your way, but you have not commited blasphemy tell you have actually spoken against the Holy Spirit. To call the Holy Spirit common or unclean.
Matthew 12:37 For by your words you will be justified, and by your words you will be condemned."
Daniel 4:30-31 The king spake, and said, Is not this great Babylon, that I have built for the house of the kingdom by the might of my power, and for the honour of my majesty? [31] While the word was in the king's mouth, there fell a voice from heaven, saying, O king Nebuchadnezzar, to thee it is spoken; The kingdom is departed from thee.
Nebuchadnezzar took credit for what God had done. While the words were still in his mouth God passed judgement on him. I wonder if he did not think the thoughts, but when they were thoughts he could have repented. But once he spoke the words all the armys in the world can not bring back a word, once it is spoken.
It was the same thing with the rich man, it was not when he was thinking the thoughts, but when he actually said:
Luke 12:18-19
So he said, 'I will do this: I will pull down my barns and build greater, and there I will store all my crops and my goods. [19] And I will say to my soul, "Soul, you have many goods laid up for many years; take your ease; eat, drink, and be merry." '
Luke 12:20-21
But God said to him, 'Fool! This night your soul will be required of you; then whose will those things be which you have provided?' [21] So is he who lays up treasure for himself, and is not rich toward God."