I may have been unclear. I am often greatly impressed by the work people do in those kinds of languages. But what impresses me are the algorithms they used. If I'm told the algorithms and understand them, and then look at an implementation in those languages it is almost certainly going to be in the ballpark of what I expected to see, and similar to how I would have implemented it.

If I'm just told what the problem is, and not the algorithms used and shown the code that solves the problem I might not understand what is going on until I figure out the algorithm from the code, but all the statements in the program will make sense at least as far as what they do--I might not get why they do it until after I've figured out the algorithm, but I'll understand what.