I didn't notice any sarcasm in Monkeh's reply and yes, you may well know more about gas turbine generators then 99% of people on here. A doctor will know more about the human body than 99% of people on here.
The phrase '...you don't know what electricity is..' is a little sarcastic, don't you think? I mention the fact about GTGs as a retort to the comment as there wouldn't be much electricity without them, not as a random fact.
Not a phrase I used, funnily enough.
On a related note, I probably know more about networking than anyone here.