1. Feature complete. Features do not need to be added.
2. It is secure.
3. No maintenance needed (can broke while

Implications: if build tools change, then we may not be able to modify our software. If hardware, platforms, interpreters or external APIs change, the software may stop working. That's the implication.

Examples of finished software:

1. The Nintendo Gameboy
2. Job Sheet Manager
3. A multitude of embedded systems (DVD player, ...)
4. Some small JS apps and libraries

How to make them?

1. Understand the requirements. There must be a definition of done.
2. Keep scope small and fixed
3. Reduce dependencies
4. Produce static output
5. Increase quality assurance: don't fix bugs - avoid them

(via https://sebsauvage.net/links/?nhyv5A)