.5/1 Turn set against manaic

[Daniel Magix]

:gurnch:
I don't understand the logic of calling the Turn raise, only to donk the River.
I just feel like typing out some thoughts on one scenario - Flush Draw:
Calling the Turn let's him see the River for as cheap as possible. Then donking the River gives him the opportunity to fold his missed draw. You win the least in this situation. If he had the flush draw and missed, a River check will get you more money. If he missed, he will either check behind or bluff. If he checks behind, you missed no river bets, since he was folding anyway. If he bluffs, you are calling and you make one more bet. A CC on the River also minimizes your losses when he actually has the flush.