Gardens as Crypto-Water-Computers: https://pruned.blogspot.com/2012/01/gardens-as-crypto-water-computers.html
Built in 1936, this machine was “the world's first computer for solving differential equations,” which “for half a century has been the only means of calculations of a wide range of problems in mathematical physics.” Absolutely its most amazing aspect is that solving such complex equations meant playing around with a series of interconnected, water-filled glass tubes. You “calculated” with plumbing.
Garden historians usually characterize the technical control of water in stately gardens as part of a system of social control. As an alternative, or at least to offer another layer of meaning, this augmented timeline presents a crypto-historical narrative of gardens as gigantic water computers.
Making Money Flow: The MONIAC: