For this thesis, you need to show that movable type in specific, rather than printing in general, was necessary and sufficient for the scientific revolution. China made extensive use of printing, for things like important philosophical works and also for things like recreational plays and novels.

And while the West used movable type, it often seems not to have bothered to exploit the movability of the type. From the introduction to my reprint of Smyth's 1920 A Greek Grammar for Colleges:

> When the Department of Classics of Harvard University acquired the plates to A Greek Grammar for Colleges by Herbert Weir Smyth (1920), the decision was promptly reached that this excellent and detailed treatise should again appear in print.

> There is in fact scarcely any sector of Greek Grammar which has not marked progress as a result of extensive research or else based upon ingenious combinations of existing data.

> If a revision of Smyth was therefore from many points of view a desideratum, it was clear that a complete revision would be an extremely complex task, and also, because of the difficulty and expense of making alterations in the plates, a very costly one. Many of the texts cited by Smyth have since been re-edited; some of his citations would undoubtedly prove to be in conflict with the readings of our best current texts. Yet it would be a vast and perhaps profitless undertaking to verify all the citations, make alterations where necessary, and change the commentary to the extent required.

> As it turned out, even the much less ambitious revision of Smyth as originally conceived has not been possible, largely because of financial considerations. Accordingly, it is necessary to list here exactly in what respects the present revision of Smyth -- which might more modestly be termed a corrected reprint -- differs from its predecessor.

> Some changes have been made in the historical comparative part of the work, particularly in Smyth's original introduction and here and there in his original Part I (Letters, Sounds, Syllables, Accent). A very few changes, again bearing on historical linguistics, have been introduced in Part II (Inflection). Prof. Sterling Dow has contributed a valuable revision of paragraphs 348 on the Greek system of notation and 350 d on dating.

> In addition, lists of corrigenda have been supplied by several scholars, and these have been silently inserted wherever appropriate.

> Perhaps one caveat is in order. The student unfamiliar with the reconstruction of assumed intermediary forms may sometimes be puzzled by Smyth's use of such forms with no indication that the actually occurred or else are purely hypothetical. It would have been tempting to mark all the non-existent reconstructions with the now traditional asterisk as is customary in works on historical linguistics.

> One important lacuna in Smyth must be pointed out since it has not been filled: there is no section on prosody.

So Harvard came into possession of the undestroyed plates for printing a classic work, and wanted to update it with the last 40 years of research in the field. But that was cost-prohibitive. They couldn't even adjust the notation, since that would have required re-setting much of the book. They could insert whole pages, and they could make changes to a small number of individual pages -- and both of those things would have been true if the book had been block-printed originally instead of being set with movable type.

It is not obvious to me that Western printing with movable type offered all that much advantage over Chinese block printing, leaving the logistics of the writing system aside. Movable type made it easier to destroy works that didn't sell well, because their materials could be cannibalized for new works. But it didn't make it easier to reprint works that were in demand, and it didn't make it much easier to produce works originally -- most of the work is in the arranging, not the materials cost.