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For whatever reason people seem to gravitate toward the sharp edges of languages and I think it’s really worth the effort to teach them the value of staying in the center lane.
I think that part of the problem is that these are concepts already widely understood to a lot of users, so the cost of explaining them early is low, and teaching `var` at the same time as `val` is natural. I made a conscious decision on ScalaZONE to leave it to later, though.
