Not your dumbest... but close. It's not that difficult. Carry some windfloaters and play with them. People get all wrapped up in this theory of currents going uphill in the AM and down at night when they're only really hunting a little bump and not a mountain. La. doesn't have a lot of thermal country. LOL BUT, that said, a lot of things can change wind flow. That's why you should carry some wind floaters. You say there's a stream bed you're hunting.With the lack of a breeze just the cooler temperature of the water in the stream can change the scent cone depending where you are. If you're sitting on a stool in a stream bed tucked up under a tree root watching a crossing(which I've done) with cold water running past you with a rush... well it's not the same as being sitting on the bank 10 feet higher. Move 20 yards from the stream and everything changes. It doesn't take a lot to tip things in your favor or screw you. Use wind floaters. Some day you'll be sitting in a stand with the wind in your face and watch a wind floater move off 25 yards and suddenly change directions 180. You can cast one after another and they keep doing it. Many variables cause it.. I don't care if the wind is steady at 10 mph from teh west... you can find a spot where it's going backwards.