I tend to focus on the important ones. Such as the development of the eukaryote which many now believe was the the result of endosymbiosis. The mitochondria used to be bacteria, and that only developed one time. The chloroplast also used to be a bacteria, but it was captured twice. The first led to the development of plants. The other was the capture by an amoeba which had no impact at all.
Regardless, it’s all extremely rare.
Your misplaced mention of entropy doesn’t interest me at all.
Well, I just read all about endosymbiosis, and I understood a little.