Boston. A headline is a promise a newspaper makes and an argument it only begins. It is also, increasingly, the only part of a story that many people read. A link now travels across the country in seconds, gathering approval and outrage as it goes, while the article beneath it sits largely unopened. There is an old and unglamorous habit worth defending in such a season, and it is this: reading a piece to its end before deciding what one thinks of it.

The habit sounds too obvious to require defense. It does not. The way most of us now encounter the written word, in a fast and crowded feed, works against finishing anything, and the cost of that unfinished reading is larger and more civic than it first appears.

Headlines are built to be shared, not to inform

A headline has a narrow job. It must earn a glance in a crowded feed and survive being passed from one hand to the next. Those pressures reward compression, heat, and a certain useful ambiguity, none of which is the same thing as accuracy. The qualifications, the counterexamples, the careful "but on the other hand," and the evidence that would either support or puncture a claim all live in the body of the piece, which is precisely where the hurried reader never goes. A good headline is an honest doorway. It was never meant to be the whole house.

The cost of reacting before reading

When opinions form on the strength of a headline alone, something civic quietly breaks. People come to hold, and then to broadcast, positions they could not actually defend from the text beneath. Disagreements harden around a dozen words that were written to provoke rather than to explain. Two readers can quarrel bitterly over an article that, read in full, neither would find so objectionable. A public that reacts before it reads is easy to divide and easy to mislead, and it performs much of the labor of its own deception.

The unglamorous disciplines

The remedy is not sophisticated, which may be why it is so often neglected. Read to the end. Notice who is speaking and on what authority, since a named expert, an anonymous source, and a vague "some say" are not equal witnesses. Distinguish a claim from its proof, and ask whether the evidence offered actually bears the weight placed upon it. Before dismissing an argument, restate it in its strongest form, the version its ablest defender would recognize as fair, and then answer that version rather than a weaker one. And before sharing, pause long enough to ask whether you have truly understood the thing you are about to pass along to others.

A duty a free people owe one another

A free press and a free people are bound by a mutual obligation. The press owes its readers the full story, fairly told, with the difficult parts left in and the easy certainties resisted. The reader owes the press, and every fellow citizen downstream, the courtesy of actually reading it before rendering a verdict. Self-government asks more of us than reaction. It asks for attention, for patience, and for the humility to let a complete argument revise a first impression.

None of this is glamorous, and democracy rarely is. But a nation that reads only its headlines will, in time, come to think only in headlines, and that is a poorer and more brittle way to think than a free people can afford. So the next time a headline provokes a strong feeling, treat the feeling as a signal to open the article rather than to close the question. Read the whole thing. Then decide. It is a small courtesy to the truth, and a larger one to the Republic.