The informal fallacy of false ilemma (also called false dichotomy, the either-or fallacy, or bifurcation) involves a situation in which only two alternatives are considered, when in fact there are other options. Closely related are failing to consider a range of options and the tendency to think in extremes, called black-and-white thinking. Strictly speaking, the prefix "di" in "dilemma" means "two". When a list of more than two choices are offered, but there are other choices not mentioned, then the fallacy is called the fallacy of false choice.