Incidence algebra is a type of math that helps us understand how things are connected to each other. Imagine you have a bunch of toys that you want to organize on a table. You can use incidence algebra to figure out how many toys are touching each other or how many toys are not touching somebody else.
Think of this like a game where each toy is a player and the table is the field. We could use incidence algebra to figure out how many passes each player has made to another player, or how many touchdowns each player has made.
Basically, incidence algebra helps us keep track of how things are related to each other. It's like counting and keeping score in a game, but instead of players and points, we're counting and keeping track of toys and their connections.