I've seen this meme circulating lately, pointing out one of the many valid reasons to learn to speak dead languages properly:
My first thought was, "this is why we need to mark long vowels!" But I realized, to my shame, I don't know how to express this extremely important sentiment in Latin.
What is the idiomatic equivalent of the English "this is why…"? All I can think of is a roundabout construction, "it is because of this reason that…", and that just feels awkward.