Scribal Habits in Greek New Testament Manuscripts 103 over time. Compared to rival theories, such as a scribal tendency to add or authoritative editorial recension36, ad hoc correction offers superior scientific and historical credentials in terms of evidence, explanatory power and economy. In the present study, for example, Sinaiticus had 90% of the singular omissions corrected (56/62) but only 78% of additions (28/36). Similar results can be seen in the correction of