16 types are
16 playing cards.
4 suits × 4 ranks = 16 cards.
Suit says which crowd you're in, rank says how you move. Colours are the type colours.
INTJ is K♠, the king of spades. ENFP is A♥, the ace of hearts.
4 suits = 4 crowds
Same suit talks fast. Different suits see different worlds.
thinkers
Systems, ideas, reasons. They start from "why?".
feelers
People, meaning, mood. They start from "how did that feel?".
keepers
Rules, order, safety. They start from "properly".
livers
Body, the moment, the vibe. They start from "let's try".
4 ranks = how you move
Not strong or weak. K and Q decide inside; J and A go outside.
- KKing = decides quietly
Introvert, firm core. Once decided, doesn't move.
INTJ · INFJ · ISTJ · ISTP - QQueen = feels quietly
Introvert, soft. Good at fitting in.
INTP · INFP · ISFJ · ISFP - JJack = steps up and runs things
Extravert, organiser. Moves the room.
ENTJ · ENFJ · ESTJ · ESTP - AAce = steps up and opens things
Extravert, good vibes. Spreads the talk.
ENTP · ENFP · ESFJ · ESFP
Why not red and black
- Normal cards: ♥♦ red, ♠♣ black. Here every suit has a colour: ♠ purple, ♥ green, ♣ blue, ♦ yellow.
- Within a suit the colour lightens from K to A. Laid out, it's a rainbow.
- The two cards at the top of a match page are the two of you. Same suit? Same rank? That already tells you roughly what shape you're in.
What's 40jk?
- 40 = pick 4 letters, 0 seconds. No waiting.
- J = Joker. Someone whose type you don't know yet. 8 questions turn them into a card.
- K = King. Your card. Your hand is always these two.
40jk = 4 letters, 0 seconds. Joker & King.
The long version (mechanics, records, real pairs) is on the main site.
16 Relations, main site
Four letters can change every time you take the test. Read it without deciding anyone is a type. Read first: about typing