I wouldn't say corrupted, just different. I imagine there are many cases in which the different semantics are used intentionally. This is really not a huge is

I wouldn't say corrupted, just different. I imagine there are many cases in which the different semantics are used intentionally. This is really not a huge issue, b/c anyone who has worked with Ruby enough knows about it. It's mainly that the difference doesn't really make logical sense -- why would a "proc" behave differently from a "lambda"? Also note that: lamba { foo } means exactly the same as proc { foo } which is different than: Proc.new { foo } This sort of smells, but it wouldn't if there were a new keyword to represent the way Proc.new behaves... then everyone would flex their Ruby muscles by writing confusing hacks that utilized the behavior of StrongReturnProc.new ... :)