Wouldnt the red flag you mentioned allow you some advantage, even if its a bluff? The opponent might wonder what infact do you have in your hand that merits losing 2 cards rather than just 1, thus potentially causing them to slip up? Is this out of context when it comes to vintage? only reason I ask is because;
a) I dont play vintage competitively b) it would almost seem like in whatever given deck, the experienced player would just go as intended for their deck without so much as a passing thought? and c) would the potential slip up be probable and if so, is it something that could cause a win in this environment?

After having played on MWS, I learned I still need to go leaps and bounds to improve my game  However, the main topic is that I came up with a question based on one of the primer articles. I did read through them but didnt see an answer to this. Although the deck I was playing was in the Legacy format, the cards/ play in reference are in this format also, thus, I think it would still apply. (Not to mention, for some reason, I dont see the "new topic" option in the developmental forum...but I digress.) The question on the correct play:

Opponent has blue control deck with FOW. First turn, I duress. Would it be the correct play to let the duress go through and let your opponent rip the fow out of your hand AND see your hand (thus your potential weakness), or use the FoW and lose another card but still retain some measure of anonimity/ surprise against your opponent?

Incidently, this was the case when I played against Bardo from this board. Nice game Bardo, was also nice meeting you. Oh, and I dread those efreets now !  (yes, I blocked his creatures with my face....and lost.)