You're supposed to fold because those hands are so easily dominated. Understanding the gap concept: The term "gap concept",first introduced by renowned poker author David Sklansky, refers to the idea that a player needs a better hand to call a raise than to open the pot themselves. For example: if it is folded to you in middle position it may be correct to open-raise Ah Js; however, if you're facing a raise from a tight player under the gun, Ah Js's value shrinks dramatically.