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I cannot find the reference now, but I remember reading about favelas and how they are designed with courtyards so that there can be a shared responsibility of childcare.
The other thing that jumps to mind is dorms for students in the US which have a very similar coliving feel. I believe the Dutch and some Nordic countries were also collocating the elderly into similar areas to create a mixed generation encampment.
The 2025 and 2040 colors are definitely identifiable as separate colors…