Ya for sure. Without getting a debugger into the application code, it sometimes seems completely impossible to look at a piece of dynamic code you're not alread

Ya for sure. Without getting a debugger into the application code, it sometimes seems completely impossible to look at a piece of dynamic code you're not already familiar with and decide if it's going to work. I've found this especially tough during code reviews for new stuff that make heavy use of abstractions, even when the abstractions are good.