Tiago R Magalhaes wrote:
For loops are conceptually very easy to understand. Lists are not easy to understand (why list[[1]] instead of list[1]? it's not completely intuitive) .
I try to explain it as comparable to the difference between a subset that consists of one element (the "[" function always returns a vector of the same mode as its argument) and the element itself.
Whether that explanation makes sense depends on how comfortable the listener is with mathematical abstractions. As they say, "There are 10 types of people in this world: those who understand binary numbers and those who don't."
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