# Beware Of Sequentiality Let's say you bought a TV. Then you might subscribe Netflix. If not, you will build a personal server and install Jellyfin. In that case you will buy an additional HDD in the future. You will spend more time on watching TV. You might find some type of contents are interesting. You would get that type of products in the future. That will lead to future consumptions. Sequentiality like this is everywhere. But it is not necessarily bad. For example, why I started to study math is because I once deeply fell into scepticism. In my middle school days, I was quite mentally unhealthy and couldn't believe almost everything. So I started to prove every statement on my math textbook. That was the only possible way to believe something. But the textbook contained V-E+F=2. Euler's Formula. You can't prove it without some graph theory or even algebraic topology. I was crazy enough. So I started to study analysis, topology, &c. to prove it. While studying these subjects, I forgot the original purpose. That was partially because I already graduated middle school far before. Also I became a bit mentally healthy. When I studied algebraic topology, I realised that I have achieved the original purpose. It was just a corollary of simplicial homology. Actually it was (Euler characteristic) = 2-2g. Why V, F are (+) and E is (-) is that V, F are even dimensional and E is odd dimensional. A polyhedra is 2-dimensional. So only 0,1,2 are possible for the dimensions. Vertex, Edge, Face. Also a polyhedra has no hole. Genus 0. But it didn't matter anymore. The original purpose induced a sequentiality. That sequentiality completely changed my life. Sequentiality affects your life far bigger than non-sequentiality. Because [Non-sequential] ~= one, but [Sequential] ~= many. But you can detect sequentiality beforehand. For example you can easily know that making a website will induce a sequentiality. Therefore we should intentionally practice on this at least from now on. Because there will be so many days until we die. And more the days, stronger the effects. We should control these from early on.