the group itself.
why are connections so important? they are important because of the way they scale. warning, here comes some math, but its pretty basic, i promise. if there are two people then there is 1 connections between them (2 x (2-1))/2. that is, if you are in the group you can only connect with the group size minus one (you can’t connect with yourself). and we divide by two since you can’t count the connection between you and person a twice. see, told you it was easy.
with this formula you can see that each time the number of people in the group doubles, the number of connections roughly increases 