I thought it would be mu since it is the common symbol meaning micro (10^-6) at least in the metric system. I have no idea what iota has to do whit anything small, could someone explain?
It's commonly used in the phrase "...not one iota of..." Jesus uses the phrase in one of His sermons. It gained that usage because it's the smallest written Greek letter.
I don't think it's a stretch at all. In science, delta means a small amount; in mathematics, epsilon... Iota was my third try. This might be one of those questions that punishes people in specific fields of study.
Capital delta means change, it doesn't have to be small, taking the limit as one does in calculus is a derivative. I was thinking that lowercase delta was used for partial derivative and just to be sure, I looked it up just now and found out I've been wrong all these years. I still don't know how I managed to get a math degree
Describing El Salvador as the "safe" seems like a stretch. Presumably you're referring to the country now having the lowest reported homicide rate in Central America, but I'm not sure the Salvadorans being thrown into prison without trial and suffering human rights abuses would consider themselves "safe."
Yeah, this is a pretty important distinction. It's true that police states tend to (predictably) have very low crime rates, but that itself is not a justification of police states.
(I did guess the answer correctly even though I didn't know what it was!)