When you have a lack of pattern, you have true randomness
When you find a pattern, you can have a good idea when or where something will happen before it actually happens.
Pattern detection is a goal of unsupervised learning
Beware of the human tendency bias to see patterns in random data.
Validation of the pattern
Further, the discovery of a particular pattern in a particular set of data does not necessarily mean that pattern is representative of the whole population from which that data was drawn. Hence, an important part of the process is the verification and validation of patterns on other samples of data.
…the curse of big data is the fact that when you search for patterns in very, very large data sets with billions or trillions of data points and thousands of metrics, you are bound to identify coincidences that have no predictive power.”