Paul and Max stand around their brew pot.
Paul: Ok, step infusion mash. How is the temperature?
Paul, after a quick look at the thermometer, while Max waits with a little ice bucket: Argh, that's too hot! Quick, add some ice.
Paul, taking another temperature reading: Now it's too low, crank up the heat!
Paul: Now it's too hot again!
Max, throwing a frozen chicken and a pouch of frozen peas in the brew pot: We're out of ice. I'll just throw in whatever is in the freezer!
Paul, close to a panic: Too cold, too cold; heat it!
Max, equally distressed: Too hot! Way too hot! And no more frozen peas!
Paul, frustrated: This should be called step confusion mashing.
Max, wearily: Meh, it will eventually converge on the right temperature