In commit [56e5e6b](https://github.com/simphony/docs/commit/56e5e6b76c0b42bf532887d9f1e8e005e80f971b), part of [release 2.4.0](https://github.com/simphony/docs/releases/tag/v2.4.0), the motivation section was transformed into a fundamental concept's section. Much content was added, but some was removed. One of the removed contents is the mention on the fact that _Requirement simplification_ was one of the motivations behind SimPhoNy. This information may now fit in the overview, so we should consider recovering it (using Git's history) and moving it there.