**1st example of Socket I used to unblock a problem: **
I had a tree as a proc mesh to be sliced (check my video when I cut a tree).
The base is stuck to the ground like a static mesh, while the rest of the tree behaviours like a procedural mesh physic object with gravity and Sym Physics.
Without the use of a Socket the tree was completely Simulating Physics and under gravity effect so once placed in the scene was never ‘planted into the ground’ like a static mesh but rolling down as a normal stone or sphere. So was a blocking point for me: I needed a procedural mesh in order to slice it…but I also needed a static mesh to stay planted into the ground.
I solved with 1 socket. This is what I’m reffering to when speaking about different ways to use sockets.
Socket was the key to solve this issue and make the base of the tree behaviour like a static mesh, while the rest like a procedural mesh with Physics and gravity enabled.
How I did it? 
Guess how…solution with socket and bprint code here tomorrow