Insufferable know-it-all, mostly law, science, politics and Canadian football.
Slightly.
Efficiency is largely a measure of how many words you need to communicate ideas. Some languages are better at this than others. English isn’t actually that bad compared to a language like French.
English - I am going shopping today because I need some butter.
French - Je vais faire du shopping aujourd'hui parce que j'ai besoin de beurre. (In English - I am going for shopping on the day that is today for the cause that I need the butter)
German doesn’t use helper verbs like English and instead incorporates tense, which makes it a bit shorter
German - Ich gehe heute einkaufen, weil ich etwas Butter brauche.
Save one entire word. That’s typical of how German can be briefer than English.