My last blog about my talk at HDT 2019 on Stacking Asynchronous Circuits contained a link to my slides. I recommend you having a particular look at slide #21. It talks about an interesting fact that a series (stack) discharge rate follows the law of the inverse Pythagorean!
![](https://blogs.ncl.ac.uk/alexyakovlev/files/2019/10/inverse-pythagorean.jpg)
It looks like mother nature caters for a geometric law of the most economic common between two individual sides.