Thus a mass, deep market with millions of players make the job of price discovery simple, by trial and error, by constant evaluation and re evaluation of the forces that shape the market. This constant flux makes the market what it is. Otherwise it would have been a planned or ordered by fiat price as seen in many planned economies around the world.
Though this process leads to better utilization of the nation's resources, we shall not delve in to that. Our focus is 'does this price discovery process help us to trade effectively and make money in the process'.
For making money effectively, and over the long term, different methods are used by different sets of people. There are fundamental analysts, technical analysts, astrologers and voodoo artist; all participating in the game, In fact again it is these varied participants is why the market is what it is. A fluid mass constantly changing shape, with different players entering, leaving, hoping, praying, fearing. The market is almost like god for these players, it can fulfill one's wildest wishes, it could make a pauper out of a millionaire. but the market does not know nor care, it just is.
These large participants ensure that one group of players can not manipulate the market for long and gives a chance to smaller players to play on almost equal term as the large players, provided they follow certain discipline.