I agree, even experienced developers can get stuck barking up the wrong tree. There are at least one or two exchanges like this every week in my team: Dev

I agree, even experienced developers can get stuck barking up the wrong tree. There are at least one or two exchanges like this every week in my team: Dev A: - I'm working on X, and will just need to fix the code for Y to handle it. It's a bit messy but I'm probably done tomorrow. Dev B: - Eh... I think you need to do something to the Z code, we can take a look after the meeting. Dev A: - Sure.