ABSTRACT
Warren J. Manning Department of Medicine, Cardiovascular Division, Harvard Medical School, and Beth Israel Deaconess Medical Center, Boston, Massachusetts, U.S.A.
In order to know where things are headed in the future, it is important to know where they
have been in the past and where they are now. We have tried in the preceding chapters to
emphasize the historical aspects of brain embolism and to bring readers up-to-date on
present knowledge. Looking to the future is another matter. Of course, we do not have
an infallible crystal ball capable of unerringly looking ahead. The present chapter rep-
resents our best guesses, hopes, and predictions.
