Imagine, you are a convict. You didn't do anything particularly horrible - you were hungry so you stole some food. It's not like you were the only one around doing it, you were just unlucky because you got caught. Transported to Australia - the other side of the world. You're only 15! Now, you you spend your days making the 'building blocks of the new colony' - bricks. You suppose you should count yourself lucky - you could have been put on a road gang.