If you really care which programming languages I already know or which applications I have used before, I can only assume that you're overlooking my ability to quickly pick up new technologies and adjust to new ways of thinking.This is going to ruin your world view, so brace yourself
So, this is ridiculously tongue-in-cheek, and the reply is over-the-top to the degree that I can imagine with no effort the same being uttered from underneath a drill sergeant's hat against some fresh recruit who copped a serious attitude.
It's not an unfair response to brash cockiness, but it has set me thinking.
Whether a language, or a framework, or a library, or any other handy tool of the software trade, there seems to be two camps that drown everyone else out in the din.
There's the camp that declares that learning new things is a matter of extrapolating from the understanding one has already developed to fit with whatever assumptions this instantiation of thing X makes. For instance, you understand what Object Oriented programming is, and how it works. You are presented with a language you have never used before, but know it has support for OO. This puts you from a level of having to understand OO to a level of understanding this language's semantics for OO.
Then there's the camp that declares that learning new things always starts from a position of absolute ignorance. Prior knowledge and understanding of concepts that would seem to apply to this new thing you are learning don't apply, almost as an axiom. As with my example of OO above, it doesn't matter that you know what OO is, and what it means to the structure of your program. If you don't know OO in the language of discussion, you get no points toward credit of understanding OO.
If I may be blunt, both these stances seem like bullshit. You don't magically know the syntax of how to do OO in a new language simply because you know OO from a theoretical level; it's something you have to look up. But different languages' implementation of OO aren't so disparate that the only thing they share is the name. There is a basis there you can rely on, but it doesn't get you 100% of the way there.
I guess the question I don't think people answer enough, which I would like to inject into the conversation is "how far does it get you?"
I realize that the answer will vary for different theoretical ideas, and different practical realizations of the same. The point of my question is to challenge the presumption that understanding of related concepts either gets you to the finish by default, or leaves you gasping at the starting along with the people who didn't have that understanding. I think this gets left behind when we start having all of these political battles based on generational identity, and I'd like to see what people think when smacking other generations around isn't the primary goal of a thread.