[leetrout]

> Conceptually they're a bit like passing marshalled data between APIs in that sense.

That's IMHO a great way to think about when it's Good™ to use them. Yes, there are times when you just have to use the empty interface type but it's really not as bad as everyone makes it out to be.

I love Go because it is explicit and because explicit types make everything easier in the long run. I get tired of seeing Go written like Python/Ruby/$otherDynamicLang with overuse of interface{} and/or reflect.