The optimum (sweet spot) is everything in life. If BCH keeps adhering to the rules of physics and nature it will win the survival of the fittest contest within the Bitcoin family without a doubt.

The optimal block size can't be calculated or narrowly defined but it can be researched and subsequently assumed by market forces. Nature is built upon optimal conditions. Each living organism has its own range of viability and of course that changes over time.

BTC is self-limiting its growth such that at best it will grow into a Bonsai. More likely though it will be overtaken by other species or another plant of the same specie (Bitcoin family).

BCH tries to grow in accordance with the outside forces. It acknowledges that there is a limit somewhere (storage, bandwidth, CPU, RAM). But we don't no yet where the limit will be in the future as those limits that will limit growth, grow themselves over time.

BSV thinks there is no limit to growth at all. It's like a a plant that colonizes everything and in the end has to consume itself and dis of starvation because growth exceeded the natural resources (ecosystem) that nurtures the organism sustainably over a long time. I think BSV falls into the trap that nature is based solely on competition. While competition is a big and necessary part it completely neglects that ecosystems and its sub parts are big collaborators that provide vital for life conditions for each other only to then grow in a competitive way (notice that there is a hierarchy involved).

In both cases for BTC and BSV completely different centralization effects will hinder growth and acceptance. And more disturbing in such a way, that they open themselves up for state and corporate attacks.

As long as BCH chooses a scientific path, searching for the sweet spot without defining it as the holy grale, but as a range of viability that changes over time I will stick to it. That's why I personally think we shouldn't speak in abstract terms as small, big and megalomaniac blocksizes . We rather should point out that the solution to this question is multi faceted and needs a lot of thought from different angles (areas of expertise). The so gained information is a necessary pre-requisite for the free market to decide on the optimal block size at a certain time.

I like to call BCH blocks reasonable blocks, because a lot of effort from various disciplines has been made to understand the optimal environment and growth conditions for the organism that Bitcoin is.

Written by: gr8ful4
Source: http://bit.ly/2Z5JdiW