FAIRFAX, Va. —
The Vietnam War is an even better example. No one knows for sure whether Kennedy would have fully disengaged from Vietnam after his reelection, but almost no one believes that JFK, a wary incrementalist, would have committed 535,000 troops to Southeast Asia as Johnson did.
5. Fifty years later, we know everything we'll ever know about Kennedy's assassination.
Even a half-century later, we don't have the complete story of the assassination. This is because many government documents remain classified and hidden. Reputable groups and individuals have estimated that there are 1,171 unreleased CIA documents concerning Nov. 22, 1963. The Center for Effective Government has even claimed that there may be more than 1 million unseen CIA records related to Kennedy's assassination. No one can close the book on this subject without examining them.
The Assassination Records Collection Act, signed by President George H.W. Bush in 1992, requires that all remaining documents about the Kennedy assassination be released by Oct. 26, 2017. The next president will rule on any requests from the CIA and other agencies that materials be withheld or redacted after 2017. Under the law, the president can do so only if there is "identifiable harm to military, defense, intelligence operations, or conduct of foreign relations, and the identifiable harm is of such gravity that it outweighs the public interest in disclosure."
In addition, new technologies applied to hard evidence remaining from Dallas may yield fresh insights and conclusions. Recently, for instance, my research team used advanced audio analysis of a Dallas police recording from Nov. 22 to debunk the conclusion of the 1979 House Select Committee on Assassinations that the recording proved that there were two shooters in Dealey Plaza.
As Kennedy said only a month before his death, "Science is the most powerful means we have for the unification of knowledge." The scientific method may be our best hope to answer lingering questions about that awful day in Dallas.