> how often do you not know whether a particular variable is a string or an integer? In someone else's code? 100% of the time. I was once a diehard Ruby believ

> how often do you not know whether a particular variable is a string or an integer? In someone else's code? 100% of the time. I was once a diehard Ruby believer, and I still use it for small programs. But having had the singular displeasure of working on a huge Ruby codebase (pre-JVM Twitter), I have learned, in the hardest possible way, that untyped languages are absolute nightmares when more than one person is involved.