Remember back in math class when you would take a test? It wasn't enough to just write down the answer. What's the limit of this infinite summation? pi/2 Yes, but how did you get that number.
Some problems in programming are like this. We want to keep track of the computations done and only add more steps to the results. That's basically the entire premise of functional programming.
On this episode, you'll meet Christopher Ariza who created a project called StaticFrame. Think Pandas and NumPy, but it never changes computation it's already performed.
Links from the show
Talk Python Training