Dimensional analysis When we code, we code in numbers - doubles, floats and ints. Those numbers always represent real world quantities. For example, the number of people in a room can be represented as an integer, as can the number of chairs. Adding people and chairs together gives a nonsensical result, but dividing the number of people by the number of chairs gives a useful indicator of how full up the room is. val numberOfPeople = 9 val numberOfChairs = 10 numberOfPeople + numberOfChairs //...
