"Andy Warhol is like the Beatles," a family friend said to me. "It doesn't matter whether you like them or not." They are such large presences on the cultural landscape that they seem impervious to criticism. We were strolling through the sprawling exhibit "Andy Warhol: From A to B and Back Again" at the Whitney Museum of American Art, open until March 31. Warhol, like the Beatles, was a cultural phenomenon, omnipresent in his place in time, and he still manages to hold unwavering relevance 31 years after his death. Time itself has much to do with not only his art but his posthumous popularity, considering our continuing interest in the raucous '60s, '70s, and '80s—decades he ruled over with mystifying endurance and celebrity. The Whitney provides a startling abundance of his work, but its younger visitors will learn little about the man or his life. Warhol is turning mythic.