But this supposition depends on a merely conjectural emendation of the text. Present-day lexicographers reject this theory as conjectural and disproved. However, confirmed direct ties between Sabbatai Zevi and any Sufi order are conjectural and hearsay. Note&colon; The chronology prior to 1056 is partly conjectural. The scant evidence makes explaining these differences largely conjectural. Unless Planet Nine is observed, its existence is purely conjectural. In this conjectural hypothesis, he would be the ephemeral Shepseskare. In oligopoly theory he developed the conjectural variation approach. Its editors note that "the text has suffered considerably and reconstructions are conjectural". She argued that the conclusions reached by De Lumley were more conjectural than compelling. The studies concerning the African Romance are difficult and often highly conjectural. Robertson in his "History of America" moves between narrative and conjectural history. The result was a series of conjectural histories. The rarity of any references to him in contemporary documents makes further specification conjectural. This conjectural mass has been termed "dark matter".