Hitchcock has made a weighty contribution when it comes to revolutionising film technology towards a rational and more compressed process. For my part I think that his performance in this area will eventually be recognised by film theorists and they will rank him as being among the greatest of pioneers, which he rightfully deserves.(Bergman's language is somewhat ornate but I did my best to stay true to his rhythm yet make it comprehensible.)
Thus has he recently finished a movie called Rope that of itself concentrates the sum of a long time of patiently doing technical experimentations. (Which those who are interested can see develop from film to film.)
The procedure does not sound so remarkable in itself: He does long takes. But: He does long takes where the length is not noticeable.
There are times when I think this is my favourite Hitchcock.