Electrical Signals of Conversation

When you think of language or conversation, what comes to your mind is probably chatting with a friend. What makes this conversation possible, though, is actually electrical signals in the brain. So what do electrical signals have to do with conversation?

Human languages are full of puzzles. For example, why do languages that have different forms for singular and plural nouns usually have shorter singular forms and longer plural forms for most nouns, like flower – flowers in English? Why are you more likely to say, give me my money than give my money to me? Why do languages like Latin or Czech, which have flexible word order, also tend to have case marking? For example, the Latin word liber “book” will have different forms depending on whether you say “The book is interesting” (liber), “I read a book” (librum) or “I found it in a book” (libro).