The Kalman Filter is an algorithm for taking noisy measurements of dynamic systems and using them to get a better idea of the underlying dynamics than you could get from a simple extrapolation. If you've ever run a marathon, or been a nuclear missile, you probably know all about these challenges already. 

IMPORTANT NON-DATA SCIENCE CHICAGO MARATHON RACE RESULT FROM KATIE: My finish time was 

! It was the closest I may ever come to having the perfect run. That’s a 34-minute personal record and a qualifying time for the Boston Marathon, so… guess I gotta go do that now.

Procella: YouTube's super-system for analytics data storage

Linear Digressions is a podcast about machine learning and data science.  Machine learning is being used to solve a ton of interesting problems, and to accomplish goals that were out of reach even a few short years ago. 896520