Hi guys, I just watched Michael Close workers volume 1 and I really like the invisible deck, but I can't figure it out if the spectator chooses card number 26 or 52 in the stack(Both at the first card of the deck - depends on which side you are open).

Any thought?

This is a pretty cheap work around, but when I'm asking the spectator to mentally select their card, I say something like "not something obvious like a king or ace, something I couldn't guess" as my ID has Kings and Aces at the ends of my deck. If they end up saying a card at the end anyway, just cut the deck before you start spreading.