Assumptions

Anyone ever get mad at you because they had an assumption that they didn't communicate with you?  This is a problem in personal life as well as professional.  Never goes over very well.  This is why the use of Log Frames in projects can be very useful.  What are the assumptions that get us from the project inputs to the outputs?  What are those things outside your control that could impact your delivery?  Also, when creating a project schedule in MS Project, add assumptions to the Notes section of a task.  Always be aware of what your assumptions may be.  The odd thing is that when we have assumptions about someone else, we think that they're obvious - 'hey, don't you think it's reasonable...', 'isn't it obvious that you should have...'.  Funny how that works...