[ohpauleez]

While I appreciate the dialog, your comment is rather condescending. I've worked extensively in Common Lisp and am well aware how the condition system works. My claims had little to do with conditions, and more about the benefits and use - It's pretty simple to have a dynamic var (say, handler), bound to anything you like, catching errors before the stack unwinds, including an expression-based REPL debugger, allowing you to change locals and return a value in the place of the exception. It has all the limitations you can imagine, but for many cases, this is plenty to be effective.