A stock dipping isn’t so bad because it can go back up. A nuclear missiles cannot unexplode.

And professionals price the downside into those trades. You don’t engineer trades the same way you do nukes cause it literally doesn’t matter if you get them wrong. As the history of “flash crashes” has shown.

A Bit easier to recover from a market dip than a nuclear strike don't you think?

It wasn't even that you recovered from the dip, the trades were actually busted (invalidated.)

Can't unexplode a bomb, for sure.

Trades are not routinely busted during flash crashes.

They were in "the" flash crash.

It had some pretty long term negative effects for Knight Capital.

Knight didn’t suffer from a flash crash. They suffered from a operational risk incident. This is literally something that professionals price into their trades. The long term negative ramifications were nothing. The next day a new firm was running the same trades under the same name.

I thought Knight got bought out a year later?