Wednesday we celebrated the greatest day in our national history. Sound ridiculous? Not to John Adams, who in 1776 wrote to his wife, Abigail: “The Second Day of July 1776, will be the most memorable Epocha, in the History of America. I am apt to believe that it will be celebrated, by succeeding Generations, as the great anniversary Festival. ... It ought to be solemnized with Pomp and Parade, with Shews, Games, Sports, Guns, Bells, Bonfire and Illuminations from one End of this Continent to the other from this Time forward forever more.”

At least he got the pomp and parade part right.

We can’t fault Adams for failing to realize that the legislative act creating independence would be supplanted by the Declaration of Independence (though when we read those soaring phrases about self-evident truths, we can be glad that it did).

So, I propose we make July 2 a national holiday to celebrate the Founders for some of their greatest but least appreciated attributes — their mistakes.

Consider the Declaration of Independence itself. As the recent HBO docudrama “John Adams” amusingly captured, Thomas Jefferson squirmed in his chair as his draft was edited. The Virginian thought that the revisions, including the deletion of a passage blaming King George III for the evil of American slavery, were a mutilation. He was, of course, wrong.

Less well known is that Jefferson disliked the idea of a permanent constitution, thinking it would become a “dead hand of the past” weighing on future generations. He proposed that the Constitution expire every 19 years so that a new one, more attuned to current issues, could be written. Fortunately, James Madison persuaded him not to pursue the idea.

The Bill of Rights as we know it is not what was initially proposed. The original first two amendments, one regarding the number of constituents each member of Congress had and the other addressing congressmen’s salaries, were never ratified by the states. What we think of today as our First Amendment freedoms were actually third on the list.

A truism during the early years of the Revolution was that “where annual elections end, tyranny begins.” At this point in our quadrennial spectacle of electing a president, though, I suspect few in this country would support making the campaign an annual process. Fortunately for us, experience convinced many of our forefathers that longer terms might yield greater stability.

Then again, some founders cared too much for stability. The first Treasury secretary, Alexander Hamilton, proposed that Senate and presidential terms be for life. He often complained that the Constitution did not create a powerful enough national government, calling the document “frail and worthless fabric.”

Luckily for us, the Founders knew that they were still figuring things out. “Experiment” was the word they frequently used to describe their handiwork, with all that it implies about wrong paths and false starts. As we honor our nation’s birth and those who worked to bring it about, we should include some veneration for their willingness to experiment and, just occasionally, get things wrong.

(Trees is the author of “The Founding Fathers and the Politics of Character.” This essay first appeared in the Washington Post.)