It can be really hard to explain just how cheap life is in places where a great chunk of society live in the margins between the bread and poverty lines.
In Salta, Argentina, trying to get my dad to back down from being over-charged 10 bucks having been let out of the taxi on the good side of the shanty town, I tried to explain.
Option A: hand the cash over or, option B, he'd head into the shanty town and we'd get rumbled. Option A was looking good and despite protestations to the contrary a right hook is no match for firearms the last time I'd checked.
"It's the principle of the thing not the bloody 10 bucks," he kept muttering. Which may have been right but as he threw the 10 pesos at the mullet-sporting taxista, I wasn't sure his principals were about to cost him (and us) a whole lot more.
I tried to give the taxi driver a further $20, shrugged and said: "He's old. He's insane. I just need to get him home - every family's got one right?"