Let's talk about leaving a mark in the world, or letting the world mark you. As a player, as a character. So now think about moves. We're getting a little most specific here. Think about the movements your character, characters, anything you play with, will be. Think about the moves sets, your moves, as they are. Walking, climbing, running, striding, crawling, strafing. Any kind of gesticulation. Another analogy - the ballet of the dance. Well when you dance, you dance in a specific space. A stage. Well again, a stage is another word to define the level, and has been used in early games. Well, how do you move on that stage? On that stage of life? As you mimic life and illusion just as you do on a stage, in a play, in a dance. Then think about the repetition. Again, like a dance like when you have to learn it. You have to repeat movements after movements until you master it. Well, it's the same in a video game you have a defined list instead of moves. Because that's the way video games are thought of, with a set of animations, really rarely characters have the freedom to express themselves completely freely. Most of the time, you will have to repeat through the same set of animations to repeat the same movements. Again opening a door, opening a notebook. Dropping a gun, recharging it. Anyways, all of this has to be repeated multiple, multiple times. The effect in that is that you start to learn. You start to learn how to move in this world. And you start to learn how to move in this world because the environment has an effect on you. It's impacting you. The more you will have to open a trap or walk on a wall. You know, some games let you walk literally on walls. Well if you have to do that set of moves it’s because the environment first lets you do it. And because you have to do it to inform a story because it's part of a much larger context. So as you learn how to move in a game will your character learn as well? Will it be only you learning, gaining more dexterity? Well that's how the environment can play a really important part on you as a player and not just as a context, but as pure mechanic.