When my character is speaking I know that I should type out certain numbers but not other numbers in words. Specifically: Years "It was back in 2013," Jon said. OR "It was back in twenty-thirteen/two-thousand thirteen/etc," Jon said I dislike the second because it may force the reader to read it in an uncomfortable way for them (I can say it either way but it could easily interrupt the flow of reading and sometimes that's more important than showing HOW your character would say the year/thing.) Which is correct though? Thanks in advance for further information!