Janice's friend Ralph says he's psychic. She tests him by randomly drawing cards from a deck and asking him which suit each card is. These are not "normal" cards; they were made specifically for this task. There are 5 colors printed on the cards (not where Ralph can see them), and there are an equal number of cards of each color in the deck. On each draw, Ralph has a one in 5 chance of guessing the color correctly if he's not psychic (i.e., if his guesses are random). Janice draws 4 cards. What is the probability that Ralph will guess all of the cards correctly