https://en.wikipedia.org/wiki/Tragedy_of_the_commons https://en.wikipedia.org/wiki/Tragedy_of_the_commons The most sustainable models I've seen have these feat

https://en.wikipedia.org/wiki/Tragedy_of_the_commons https://en.wikipedia.org/wiki/Tragedy_of_the_commons The most sustainable models I've seen have these features: - Access to the physical space is free for non-members only during restricted time periods - A small monthly membership fee is required to access the space during other hours - Mandatory training is required for any complex/expensive equipment (laser cutters, 3d printers, welding equipment)