Zionist authors at the beginning of the exodus considered it to be part and parcel of a "diabolic British plan" devised to impede the creation of the Jewish state. He also emphasizes that even those who had always advocated the Arab expulsion, like e.g. Yosef Weitz, had done nothing to prepare for it in advance, and thus found it necessary to improvise the "other transfer", the one dealing with transfer of Arab properties to Jewish institutions. Globally Laurens also considers that the "intentionalism" thesis is untenable in the global context of the events and lacks historical methodology. He insists that, were the events the "intentionalists" put forward true, they are so only in terms of a priori reading of those events. To comply with such an analysis, the protagonists should have had a global consciousness of all the consequences of the project they promoted. Laurens considers that a "complot theory", on such a long time period, could not have been planned, even by a Ben-Gurion. In an "intentionalist" approach, he claims, events must be read without a priori and each action must be considered without assuming it will lead to where we know a posteriori it led but it must be considered in its context and in taking into account where the actors thought it would lead. Laurens considers that with an appropriate approach the documentation gathered by Morris shows that the exodus was caused by mutual fears of the other side's intentions, Arabs fearing to be expelled by Zionists and in reaction Zionists fearing Arabs would prevent them by force to build their own state, and the fact that Palestine was not able to absorb both populations (he describes the situation as a zero-sum conflict). Morris's Four Waves analysis In The Irish Times of February 2008, Benny Morris summarized his analysis as follows: "Most of Palestine's 700,000 "refugees" fled their homes because of the flail of war (and in the expectation that they would shortly return to their homes on the backs of victorious Arab invaders). But it is also true that there were several dozen sites, including Lydda and Ramla, from which Arab communities were expelled by Jewish troops." In The Birth of the Palestinian Refugee Problem Revisited, Morris divided the Palestinian exodus in four waves and an aftermath: Morris analyses the direct causes, as opposed to his proposed indirect cause of the "transfer idea", for each wave