I already know how to calculate pot odds and I understand how to calculate outs. After reading your post how important is it to be able to calculate EV in your head at the table. I use pot odds and implied odds to make my decisions. If I am getting 5 to 1 on my money and i put the other person on a big hand. providing i am not shortstacked. this is what i use to make my calls. SO my question is if you can do this in your hand and you understand pot odds and implied odds and stack to port ratio how important is it to be able to calculate ev in your head. I guesse like you said in the last post I just need some good examples. Thanks for any clarity any one can give me on this.

Thanks
Don