Ha ha, thanks for the interesting perspective + play on words; "immutable calm" is a gem. You've got me worried, though; I AM overly excitable! Luckily, that excitement is due to the elegance of my / the solutions to the Scala programming assignments in the ongoing Coursera courses, so there may be some "immutable calm" in my near future. :-)
Von Neumann programming would make you overly excitable, what with all these state changes and side effects.
Pure functional programming leads to immutable calm.