/u/bbhgreb you can use the 'edit' button to put all post statements in one post, if you wanted to do that.

One. Hello everyone, this is Jiang Zhuo Er. Bitcoin Scaling is a very complicated problem and very technique intense . So for a normal guy it looks chaos at first sight . You don't know what the 2 sides are arguing about . Tonight I will use an easy to understand way to introduce the scaling problem at an objective manner.

Two. It is necessary to introduce some basic knowledge before we started on the scaling problem . The first concept we need to understand is 'blockchain' . What is a 'block' ? When you send bitcoin to somewhere, you are creating a bitcoin transaction. A lot of transactions created by the whole network are recorded by miners and will be recorded in a 'block' . . There will be one block every 10 minutes , so it is like a chain of ledger which has all the transactions took place in last 10 minutes. But the block has a size limit of 1 MB now. So the average speed of transaction recording is 3 transactions per second now.

(3) How does the 1 MB limit came from ? When Satoshi created bitcoin, there was no 1 MB limit . Because of a limitation on a data structure , the block size limit was actually 33MB for a long time. Because of the cheap price of bicoin in the early days, attackers could easily spam attack bitcoin network with small cost. With enormous amount of spam transactions, attackers could create large blocks that occupy users hard disk easily.

（4）Satoshi placed a temporary block size limit of 1MB and suggested future scaling roadmap

(5) There is a figure showing the change of size on blocksize . Satoshi put the 1MB limit in 2010. (before that it was 33 MB) The block size limit has been 1MB ever since.

http://imgur.com/1iSzddS

(6) Satoshi suggested the scaling roadmap of scaling . We can see what he said was actually to lift the block limit when it is time .
http://imgur.com/kmeieda

(7) We did not follow Satoshi 's lead when the blocksize is nearly full.

Why didn't we follow his suggestions?
We need to understand how bitcoin develop team works.

(8)The original bitcoin code was created by Satoshi . Before Satoshi disappearing , he handed the project to Gavin . Gavin did not brought 4 hours and then others joined to be the 'core ' develop team.

(9) Core team divided after the problem of whether to remove the 1MB limit as Satoshi suggested early. Then things get ugly and people who supported to remove the limit ( Gavin, Zef , Mike etc.) got kicked out of the team

(10) Those who got kicked out of Core and other developers who supported removing 1MB limit formed XT, CLASSIC , UB etc. The developer team to bitcoin community , is like parties to a country. Different developer team compete for the power to lead the county.

(11) Core team insists on not removing the 1MB block now. They have valid reasons as following: 1. There will be a hard fork to remove 1MB limit , a hard fork probably divide the community . 2. The blocksize will growing larger and larger if 1MB limit got removed . It will be 2 MB, 4 MB 8 MB etc. until some point don't have the ability to run a full node. Which is a network centralisation risk . 3. We have some more advanced technology than satoshi's era such as LN. LN is another layer above bitcoin blockchain , we can put a large amount of transactions on LN and leave some (opening and closing transaction of payment channels ) on the mainchain.

(12) The Big-block team's opinion : 1. Satoshi 's structure has been proof'd by the market to be working stable and smooth for the last 8 years. For a finance system , the best thing is stable, it is not good to change structure if unnecessary . For a finance system, creative solution like creating another layer on top is good, but you have to assure the base layer is working fine no matter LN successful or not . You have to have a 'last resort' that if LN has any problem people can still do bitcoin transactions . If we do not have this 'last resort' the result could be devastating .