[dpavlenkov]

Sorry for delayed reply. I think so because JavaScript, with its prototype system, dynamic typing and closures, makes various famous language features and their implementations explicit, while other languages may hide their inner workings in the name of simplicity, safety, etc. Thus, by learning JavaScript first, one can bypass the reverence for OOishness espoused by Java or C#, and yet understand them better because "class", "type", "object" in JavaScript understood to be not atomic concepts, but constructable pieces of code. With JavaScript, one starts interacting with inner workings of the language very early in the learning process. Really, in which language one learns about events first? Remember "onClick"? Sure, interaction starts at level 0, but that's great because already the value of events is understood without writing a single "public static main voiid".