Using the Rancilio Silvia Espresso machine can be a bit intimidating if you have never used an espresso machine at all or even if you have previously used a machine that controlled a lot of the variables for you. The machine to a large degree assumes you know what you are doing.
Many times at coffee shops it is difficult to see behind the counter, to see what the barista is really doing. The grinding, banging, pounding, clanking, humming, gurgling, and whistling makes everyone wonder, what is going on back there?