OT, but this reminds me of getting sodas at work. They have a policy of "bring your own cup, it's $1.29", so I bring my 64oz Truck Stop cup to get diet coke. (listen, I've heard all of the "it's going to kill you" crapola. If you need to post how I'm going to die, that's a given as a price of being born.)
The clerks take it upon themselves to correct the injustice of getting that much soda for $1.29 by trying to charge me double the cost of a 32oz soda. When I point out how the cost increments by 10 cents for each increment in size:
16oz - $1.19
24oz - $1.29
32oz - $1.39
and ask, why they don't charge $2.38 for a 32oz soda, they say, "the price is $1.39, as posted." I then point out that the sign that says, "Bring your own cup, it's $1.29," they reply with, "that's not what was meant."
Then, I ask what they did mean by this, the usual reply is that if you bring a smaller than 20oz cup in. We then go into how they know this, and then I pull out the e-mail discussion I had with the director of food services where I work, and it is indeed supposed to be $1.29.
It's gotten so the new ones are warned when I walk up with my soda.
The moral: Never argue with an engineer. Sooner or later you'll realize they're right.
Congratulations on beating the system. You must be fun at parties.