[jodrellblank]

That the line has a bug where it doesn't do what the programmer (apparently) intended yet correcting it so it does would cause two other bugs to appear, makes it worse not better, I think.

Also the rant does say what the program should do - if it can't write to the folder, raise an exception and alert the user.

Also, whether there is something to learn depends on who you are and what you know, it's not an objective property of the information you're looking at.

PS - "epic fail" is very descriptive and fear-of-being-called-a-fanboy-peer-pressure shouldn't be what stops you from using it.