Video 02 - Observational (Tally) Statistics 1

Oops! I accidentally named the Tally Statistic for tracking the Time In System "NumberInSystem" at time 4:32 into the video (and continued to use this name for the remainder of the video). This is not technically an error since it's only an element name and still behaves as designed, but it's very confusing since the name does not match the function. I fix this error in the next video around time 4:45. Please make a note of this since we'll be using the name "NumberInSystem" in the 4th video in this module to represent a totally different statistic. Sorry!