Two common considerations have the Latin names lectio brevior (shorter reading) and lectio difficilior (more difficult reading). The first is the general observation that scribes tended to add words, for clarification or out of habit, more often than they removed them. The second, lectio difficilior potior (the harder reading is stronger), recognizes the tendency for harmonization—resolving apparent inconsistencies in the text. Applying this principle leads to taking the more difficult (unharmonized) reading as being more likely to be the original. Such cases also include scribes simplifying and smoothing texts they did not fully understand.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): What's the term for "easier reading"?
Ah, so.. unanswerable

Funafuti is the largest atoll of the nine low reef islands and atolls that form the Tuvalu volcanic island chain. It comprises numerous islets around a central lagoon that is approximately 25.1 kilometres (15.6 miles) (N–S) by 18.4 kilometres (11.4 miles) (W-E), centred on 179°7'E and 8°30'S. On the atolls, an annular reef rim surrounds the lagoon with several natural reef channels. Surveys were carried out in May 2010 of the reef habitats of Nanumea, Nukulaelae and Funafuti and a total of 317 fish species were recorded during this Tuvalu Marine Life study. The surveys identified 66 species that had not previously been recorded in Tuvalu, which brings the total number of identified species to 607.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): What type of island grouping is Tuvalu?
Ah, so.. volcanic island chain

Public bus services within the city are provided by the national bus operator Bus Éireann. City routes are numbered from 201 through to 219 and connect the city centre to the principal suburbs, colleges, shopping centres and places of interest. Two of these bus routes provide orbital services across the Northern and Southern districts of the city respectively. Buses to the outer suburbs, such as Ballincollig, Glanmire, Midleton and Carrigaline are provided from the city's bus terminal at Parnell Place in the city centre. Suburban services also include shuttles to Cork Airport, and a park and ride facility in the south suburbs only.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): What does Glanmire connect the city centre to?
Ah, so..
unanswerable