Replies

Mehran March 2, 2018
I am assuming you are referring to Sufficient & Necessary statements, which I refer to as general principles.The idea here is that these statements apply generally.
So for example, "all carrots are vegetables" is a general principle that applies to (1) all carrots and (2) anything that is not a vegetable.
Hope this helps! Let me know if I have misunderstood your question here.

LeeLarue June 17, 2019
When it is said in the lecture in could be also a "principle" - what does it mean by that? Main Principle - like a main idea or main point? I am a bit confused on that part.