What on Earth just happened to the stock market?

Redemption Day quickly turned into Reckoning Day on Wall Street.
Going into Thursday, the sagging stock market had two big questions it wanted answered: Is the artificial intelligence bubble about to burst, and will the Federal Reserve cut interest rates in December?
At first, it seemed like traders finally got the clear response they had been eagerly awaiting:
Nvidia reported super-strong earnings Wednesday evening, initially easing fears that demand for AI had faded.
And Thursday morning’s jobs report showed the unemployment rate had ri