Latest post on Improv talks about Pito Salas's work in the creation of the product, and his fame as "inventor of the pivot table."

Pito Salas, himself, dropped a comment on the post saying, "This article is an amazing tour the force analysis of Improv ... what I've read is accurate and the analysis is on point."

So spread the word, the Improv article is "Pito approved!" (not to put words in his mouth, ahem)