Think about it as getting a time series of previous measurements to aid in the detection of anomilies. If you just give me the metrics of a production system at

Think about it as getting a time series of previous measurements to aid in the detection of anomilies. If you just give me the metrics of a production system at an instant in time, it's hard to say whether anything's wrong. But when I know the response time has been in the same range for the past year, and then increases to 2x and stays that way for a week, I can be pretty confident that something broke. Whether we're anywhere near feasibly getting that resolution of data is a different question.