I’m derailing this showerthought to point out that I think it should be “a unique”, not “an unique”. Say both out loud. Now you might think that doesn’t make sense, because unique starts with a vowel. But not so fast! “Unique” is well… unique… because the “u” is actually pronounced like a “y”. The “a vs an” decision is actually an issue of consonant/vowel sound and not literally whether it’s a vowel or a consonant in the first letter of the following word. Remember the old list of vowels? a, e, i, o, u, and sometimes y? This is one of those sometimes moments. Y sometimes behaves like a vowel, but for the “a vs an” decision, it behaves like a consonant. You wouldn’t say “an yellow shirt”. You’d say “a yellow shirt”. And “unique” has the same sound at its start as “yellow” does.