> It is necessary that there should be a common global language that everyone speaks, It's obviously not necessary as it is still far from the case that everyo

> It is necessary that there should be a common global language that everyone speaks, It's obviously not necessary as it is still far from the case that everyone speaks English, nor has it been the case historically. It is true that lingua francas, link languages which acquire large numbers of non-native speakers are a common feature over time, spreading from obvious utility (trade etc.)