Could someone rationally explain how earth's life started from one cell organism and it became us?

One celled organisms. Like the tee shirt says, "My ancestors spent a billion years evolving from one celled organisms in a primordial soup and all I got was this tee shirt". LOL.

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.