The other day, WeChat caused quite a stir.

It started when someone noticed that WeChat Status had quietly begun showing view counts. The internet immediately started guessing: could you see who visited your profile now? Zhang Jun, Tencent’s director of public relations, responded: read receipts and visitor history are “welded shut. We will not develop or offer them.”

“Welded shut” is a clever choice of words. Not “there are no plans for now,” but sealed off.

I thought about it and found the whole thing interesting. Why are people so nervous about visitor records?

On the surface, it is about privacy. But strangely, people do not want either side of the feature: they do not want to check on others, and they do not want others checking on them.

Maybe it is because WeChat has always kept us in a protected state of uncertainty. You post to Moments without knowing who has seen it; you send a message without knowing whether it has been opened. If you knew that a long-lost friend quietly viewed your posts every day but never liked them, could the distant, ambiguous relationship between you still continue?

Once something has been explained, it is hard to pretend nothing happened.

WeChat’s product logic helps people avoid the social cost of certainty. It has no read receipts and no visitor history. It is not that the company cannot build them; it has chosen not to.

What it preserves is not an honest connection of “you see me, and I see you.” It is a Chinese-style social balance built on “let’s pretend not to know”—an accurate understanding that what people really need is not transparency, but dignity.

But the most interesting thing is that this rumor made it to the top of the trending list.

A feature that never existed was enough to stir up the entire social network. We all know what we are doing: secretly looking at someone, while guessing that someone is secretly looking at us. We just tacitly pretend not to know.

That pretense is the most fragile part of the whole arrangement. One rumor can puncture it.

Tencent “welded shut” the visitor feature, preserving that pretense.

Zhang Xiaolong is a great admirer of Leonard Cohen—the older man I wrote about in this article, on the last letter Cohen wrote to his muse.

Cohen has a line that has been quoted to death: “There is a crack in everything, that’s how the light gets in.”

Zhang Xiaolong probably understands the other side of that line too. Because the cracks in the human heart cannot be welded shut, products need rules to keep them in check. Light comes through the cracks, but other things slip out too: voyeurism, jealousy, testing one another, and the hard-to-explain obsessions that surface late at night.

You cannot change human nature, but you can design an environment where it is less likely to run out of control. That may be the real logic behind WeChat’s “welded shut” features: not trusting users, but understanding human nature.

But no one can weld shut the crack in the human heart: the urge to scroll through someone else’s posts again and again late at night, the contradiction of wanting to be seen while not wanting to be seen through.