If Wú Wàng has appeared in your reading, the book is naming a moment in which the right action is the unrehearsed one. The character 無妄 means literally without falsity — without the small misalignments that come from doing one thing while intending another. Thunder under heaven, moving when it is moved, not when it is convenient.

Classical commentary reads this hexagram as the hexagram of unforced action. The four cardinal virtues open the judgment because innocence done well is one of the most powerful configurations the book recognises. But it is conditional. The next clause warns: 其匪正有眚 — what is not straight meets calamity. There is no clearance for sincere-sounding manipulation.

What the book counsels is the simplicity of doing what is in front of you without trying to angle it into a strategy. 不利有攸往 — nothing serves in going forward — is a strange instruction inside an otherwise highly favourable judgment. It is targeted at the calculative reach. Move from the original impulse, not from the second-order plan about what to do with the impulse.

Wú Wàng's failure mode is the performance of innocence — naive action consciously deployed for effect. The book sees this immediately. The hexagram appears when the reader is being asked to act simply, and the temptation is to dress the simple act in something more clever. The clearance is for the un-dressed version. Anything else turns the configuration grim.