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"You might think of the lines between subsystems as being hoses with water running through them. If you want to reach in and pull out a subsystem, that subsytem is going to have some hoses attached to it. The more hoses you have to disconect and reconnect, the more wet you're going to get. You want to architect your system so that if you pull out a subsystem to use elsewhere, you won't many hoses to reconnect and those hoses will reconnect easily" -- Steve McConnell

"A class is a lot like an iceberg: 7/8 is under water, and you can see only the 1/8 that's above the surface" -- Steve McConnell