Well let's see. Perhaps, processing social media data, analysis of stock market data, looking at weather or other observational data, working with log events, h

Well let's see. Perhaps, processing social media data, analysis of stock market data, looking at weather or other observational data, working with log events, handling IoT data streams, ... and on, and on. If you look at the world, an amazing amount of data use cases reduce to events by time by some other dimension.