This has been shared in the comments section but things easily disappear over time.
This is a very, very, long explanation and is best suited hosted elsewhere.
Read: (Updated) 《Grid (그리드)》 Explained
These are some of the questions answered:
- Did Sae Ha die?
- What is the relation of Sae Ha's death to the Ghost and the Grid?
- Who is the Storehouse Sae Ha?
- Is Kim Ma Nok the ancestor of the Ghost?
- Why did the Ghost appear in various labs around the world?
- Who is the Blue Time Traveler?
- How come Eo Jin said it was Sae Byeok who told him the name of her daughter?
- If there is no Grid in the Ghost's time, should she not exist at all?
And many more.
The article was written by establishing a common ground first. In each question, the MDL member who asked it was credited.
Read: (Updated) 《Grid (그리드)》 Explained
Enjoy!
(Feel free to leave comments here, in this MDL thread, or on my blog.)