Quick rant
The start of a sentence that signals that the following will be a paragraph about a topic interesting or important to the writer that they understand may not be interesting to others
Quick rant: Our present is the result of everything done in the past some would say this means if you change an element of the past it would change the present. No it means if you tried to change an element of the past no matter what you do you will 1. cause the present to happen or 2. Not change anything at all because the fact that you live in a reality where something happened means that it no matter what happened and going to a time before it means it has yet but will happen