That comment you typed in ten seconds can be dug up in ten years. The internet has a long memory and no delete key.

Text does not decay. What took ten seconds to write gets stored in full, without the mood or the conversation around it, and can be produced years later beside a version of you who no longer holds those views. None of that is fair. It is simply how the record works.

Assume permanence rather than deletion, and let that govern only the sharpest things rather than everything you write. Before posting something cutting, ask whether you would defend it in five years with no context available. Where the answer is no, keep it in a message to one friend.