In the game of chess, a player named Aron Nimzowitsch talked about a smart way to move your pieces on the board which he called 'development'. He compared this to how soldiers get ready and move out during war. The idea is to quickly get your pieces to good spots on the board so they can enter the enemy's side.
Nimzowitsch thought of development as a team effort. It's not about moving just one or two pieces forward but getting all your pieces ready and working together. Just like in a democracy where everyone gets to have a say, every piece on the board should get a chance to play its part in the game.
He believed that development is not just about the number of pieces you move, but about how all the pieces support each other.
With each move, the goal is to strengthen your position, go into the enemy's side, and create a strong setup that helps you have a better chance to win, like how armies try to gain an advantage in war but on a chessboard.