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=YAGNI (You Ain’t Gonna Need It)=
Maybe not as involved at [[SOLID]]. Here is a small overview.<br>
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YAGNI, You Ain’t Gonna Need It, or You Aren’t Going to Need It is a principle from Extreme Programming (and somehow related with Lean Thinking) that states that a programmer should not add functionality until it is completely necessary:
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[[File:YNGNI.png| 600px]]
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*Cost of building — All the effort spent on analyzing, programming, and testing a feature.
*Cost of delay — The lost opportunity to build and release another feature now.
*Cost of carry — The complexity added by the feature to the code, making the software harder to modify and debug.
*Cost of repair — The effort spent on modifying a feature because it is not exactly what you need now.
For details understanding go to the man himself https://martinfowler.com/bliki/Yagni.html