Somewhere along the line, "Pale" started to mean "Hoppy" instead of pale colored. (I blame Sierra Nevada for this, although they didn't intend it)
Then, "India Pale" started to mean "Really hoppy".
Then, "Double India Pale" started to mean "Really, really hoppy and strong."
So now we have these words that are used to signify things that they have no bearing on. Because marketing.
It makes me sad, to be honest.
Pale Ale - Ales are considered stronger and hoppier than lagers, but a "light" colored beer is considered marketable. So you make a Pale Ale as a way to market a light, dry, hoppy ale. I can get behind that.
India Pale Ale - hoppy and pale. The word "India" is kind of a kitschy, historical idiom. I can get behind that.
Double/Imperial India Pale Ale - "Imperial" universally means "higher gravity," another historical reference from when beers were distributed overseas to imperial colonies. If you take the "Double" with respect to the "I" in "IPA", then it expands to "IIPA" or Imperial IPA. I can get behind that, sure. Makes a certain amount of sense.
"Black IPA". OK. Now you're pulling a fast one, fella. IPA's are the current fad. So you make a hoppy version of a dark ale and you don't know how to sell it. So you call it Black India Pale Ale? This is where I draw the ******* line. It's not pale, buddy. There is really no way around this fact. Black is not pale.
"India Pale Lager" Oh my god. Shut up. IPL is a thing? The closest analogy I can think of is if someone took a whole wheat bread recipe, adapted it to use rye instead of wheat, and then called it "Whole wheat rye bread."
Anyway, enough antisocial pedantry from me. Post a real challenge when you're ready, bragona71.