why do lecturers think we have all the time in the world?

I have just begun to look at the work I have to do this term...
Assesed - so I need to do well: 2 essays (in on the same day, that was careful planning bu some one!) 2 practical write ups.
Non assesed but 'must be done for the final work to count' - my dissertation proposal, and my kenya project proposal.
Then over Easter, having come back from kenya we have to, write up our kenya projects, finanlise our dissertation proposals, oh... and revise for our exams.
What fun!!!