QUOTE
If the Greeks (however great they might have been) could maintain a complete democracy for about a century twenty-four hundred years ago, I think we could manage the same without serious trouble.
Without going back to my Greek history books, I don't think the Greeks ever had a complete democracy. There were entire groups that were disenfranchised - slaves and women, for starters. They were also unable to adequately defend themselves because of the inherently devisive nature of governance by democracy. (everyone wants to make a speech before voting)
Democracy can certainly become the tyranny of the majority. It is also a cumbersome way to govern and generally is only thought to work for a civic group with a small population in a more remote location with little interaction with outside groups - and therefore less need to defend itself militarily, economically, culturally.
We are a representative republic. We were more of a republic when the country began because the US Senate was elected by the state representatives. Now we are more of a democracy because we have increased the franchise to include more groups as well as opened up the vote for the Senate to the popular vote.
The electoral college (along with the two senators per state solution) was established to guard against the tyranny of the majority. I do believe it is considered (though when it doesn't go the way we wish we have our doubts

) a truly brilliant mechanism to meld the needs of the many with the needs of the few. Had the electoral college not been devised there was a strong possibility that the Constitution would not have been adopted. The smaller states would not have signed.
Our form of government depends upon two vital elements. According to Montesquieu, one of those is "honesty." Now before you fall off your chair, you need to think of it as comparative honesty. It is more honest than despotic government, more honest than monarchy, or oligarchy, or autocracy, or feudalism.
We are always demanding honesty from our government and always lamenting its lack. But it is the very act of
being able to demand honesty - that makes us different. People living under a despot don't even have the means (short of complete rebellion) to demand honesty.
The second (but no less important) is education. We depend upon the citizenry being educated. This is the area which gives me the greatest trouble. We are not educating our children about the country and its governance - how will they carry it on? The Founding Fathers were very much aware of this, especially Jefferson.
When a
college graduate of today can't tell me (I've asked) the date of George Washington's birthday, when the history textbook devotes one half a page to his role in history, when they can't list the 13 colonies (one thought California was an original colony) - and when they can't even say why it is important that they know these things - my friends, we are in trouble.
I don't fear for this country from outside forces (an occasional WTC hurts but won't destroy us), but the educational rot within is the true disaster.
By the way - not all states have a bicameral legislature - Nebraska does not (as I recall).