“ Tod mach’s mir leicht, wenn du kommst vor deiner Zeit” reading it and understanding it is trivial. If you have to look up each word individually your comprehension will at best be enormously slowed. The same principle applies if what you’re reading is a chemical formula, a logical proof or a description of a historical event. Knowing the 200 or so most important events of the French Revolution by date with two sentences of explanation for context makes reading further on it enormously more productive.