Juanda's Move In The Dark Against Negreanu

[-Syk-]

I watched this episode against last night, as I have them all recorded, and I can't understand why Juanda would make that move?

Did he just misread Negreanu and think he had nothing at all or what? Because if Negreanu hit his flush it woulda been lights out for Juanda.

Also, what is the purpose of betting all your chips in the dark? Is there some strategy I'm not privy to?

-Syk-