Information cannot be predicted and resolves uncertainty. The uncertainty of an event is measured by its probability of occurrence and is inversely proportional to that. Ths more uncertain an event, the more information is required to resolve uncertainty of that eve it. The amount of information is measured in bits. Example: information in one ”fair” co n flip: log2(2/l)=1 bit, and in two fair coin flips is log2(4/l)=2 bits.