1. If the Nazis were indeed "secretly" behind the fire doesn't that imply that their publicly stated objective were different? Why go to the bother of doing it secretly? Why couldn't the Nazis just publicly say: "Let's burn down the Reichstag!"?

The Nazis' publicly stated objectives were the destruction of liberal democracy in favour of national socialism, i.e. - state control of the economy and enslaving or exterminating "non-Aryans". Setting fire to the Reichstag, blaming communists and using this as an excuse to murder or imprison their political opponents is entirely consistent with this ideology.

2. The World implies that the US government could not possibly be involved in 9/11. (btw, I am not implying that it absolutely was involved) Like any good detective examining a crime, one has to ask: Who stood to benefit from the crime? One of the obvious answers is: government officials.

The American government claims to want to save lives. Even the stupid actions they take that result in the deaths of many people seem to be taken with that objective in mind, e.g. - the War on Drugs. In terms of their stated values they did not benefit from 9/11. So your assertion relies on the American government having motives different from their stated motives.

3. There is a good deal of evidence that the US government did know about Pearl Harbor beforehand and had been trying for some time to provoke such an attack. Let's assume for a second that this was an absolutely proven fact. Gil, would you be outraged by such a conspiracy? My guess is no. Because you believe US participation in WWII was a good thing anyway. Similarly, my guess is that if you had evidence that the US government (hypothetically) allowed 9/11 to happen that you would sit on it. Because, even though you were appalled by 9/11, you are happy to see the US (and more broadly the west in general) involve in a war on the Arab/Islamic world

I would be disgusted by FDR's actions if I thought FDR had allowed Pearl Harbour to happen in order to get America into WW2. But the idea that FDR deliberately allowed Pearl Harbour is false. And as FDR never publicly expressed any wish to harm Americans as opposed to helping them again this is a conspiracy theory. FDR did plenty of stupid things for which we can justly berate him, allowing Pearl Harbour to happen deliberately was not one of them.