When it comes to leads, how many of us are so indecisive as what to lead?
Sometimes we do not always lead 4th best. Everything depends on whether we have entries to our hand, or what we expect our partner to hold, when we listen to the auction.
Try to deduce by applying the rule of 40. Add up the declarer's hand - your hand and responder's expected point count. Subtract from 40. Voila!! Easy isn't it! Of course. I always say : " This game is easy if we would only use logic"!