US stocks fall as bond sell-off spills into equities

Given that the prior for this is so high along with how many different beliefs there are about why the stock market changes, I'd say that there's a fairly low probability that any given news article's explanation is the real reason behind why it moved 1%.

Personally, I think it should be treated like a corporate press release: PR, maybe even a declaration of intent, but nothing (yet) of substance.

Note the change in the price of gold.

Complex systems can be stable but close to collapse. Individually within we see stability and presume everything is fine while laughing at preppers. After a crash we can see all the signs that were there, and we retcon stories about crashes.

Complex systems seem to crash suddenly once a point of criticality is teetered over, where causes and effects that feed on each other driving the crash harder (positive feedback is not positive).

We retroactively create stories about dependencies (Archduke Franz Ferdinand).

Watching systems come back up after a shock is also weird (earthquake in my hometown Christchurch was a spectacular example of recovery).

Trying to diagnose how modern financial crises occurred is eye-opening.