Algorithmic probability is a way of predicting what is likely to happen in the future based on some data from the past. This means that it takes the data from the past and uses it to come up with a guess about what might happen in the future. For example, let's say we have a lot of past data about people who like a certain type of food. We can use algorithmic probability to make a guess about what people who like that type of food are likely to do in the future.