Breakdown of Minnir þig það, eða ert þú ruglaður?
vera
to be
þú
you
það
it / there (existential) / the one (n)
eða
or
Questions & Answers about Minnir þig það, eða ert þú ruglaður?
Why is þig used here instead of þú?
This is a "quirky subject". The verb minna, when used to mean "to vaguely remember" or "to seem to recall", requires its subject to be in the accusative case. So instead of the standard nominative þú, you must use the accusative þig. It might help to think of the literal meaning as "Does it remind you of that?"
Both þig and það are in the accusative case. How do we know which one is the subject and which is the object?
Word order is the key here. In an Icelandic question, the subject almost always comes immediately after the verb. Because þig comes right after minnir, it is the quirky subject ("you"). The word það follows it, making it the object ("that"). Minna is one of a few special verbs of cognition that take an accusative subject and an accusative object.
Wait, doesn't minna mean "to remind"?
It can mean both! When it means "to remind", it works like a normal verb with a nominative subject: Þú minnir mig á hann (You remind me of him). But when it means "to seem to remember" or "to recall", it triggers this special quirky subject structure without the preposition á.
Why does the second half of the sentence switch back to the normal subject þú?