Once upon a time I read Freud seriously, in search of some understanding of human behavior. Now I only dip into a few of his books periodically because his thought process is so fascinating. His book The Psychopathology of Everyday Life is more interesting and accessable than many of his writings, though his style does not make for an easy read. It is in this book that Freud takes up the issue of all the little things that go wrong which we have tended to think of as accidents and mistakes. To Freud, most, if not all incidents of things forgotten, lost, dropped etc are examples of hidden dynamics of the psyche playing out in the real world. His arguments can be very strained and he extrapolates very broadly from a few anecdotes and case histories. This isn't scientific thought, but it is very interesting nonetheless. If you took him at face value, you would have to conclude that we all need an analyst - which is exactly what he thought.