Context: The consensus among linguists is that modern, standard Czech originated during the eighteenth century. By then the language had developed a literary tradition, and since then it has changed little; journals from that period have no substantial differences from modern standard Czech, and contemporary Czechs can understand them with little difficulty. Changes include the morphological shift of í to ej and é to í (although é survives for some uses) and the merging of í and the former ejí. Sometime before the eighteenth century, the Czech language abandoned a distinction between phonemic /l/ and /ʎ/ which survives in Slovak.

Question: When do linguists agree modern Czech originated?
Answer: the eighteenth century

Question: What had Czech developed by the 18th century?
Answer: literary tradition

Question: Journals from the 18th century have no substantial differences from what?
Answer: modern standard Czech

Question: How much difficulty do contemporary Czechs have in understanding material from the 18th century?
Answer: little

Question: What did the Czech language abandon which survives in Slovak?
Answer: a distinction between phonemic /l/ and /ʎ/

Question: At what time did modern Slovak originate?
Answer: Unanswerable

Question: What had Slovak developed?
Answer: Unanswerable

Question: How much has Slovak changed from the past until now?
Answer: Unanswerable

Question: What kind of differences do writings from the past have from modern Slovak?
Answer: Unanswerable

Question: What group believes modern Slovak originated during the eighteenth century?
Answer: Unanswerable