Premises, Premises
So, I've had the idea for this post for a while, but haven't been able to put it in words. I had planned writing a long, rambling, boring post, but I realized it could probably be said better shorter.
Also, it helps that SF author, statistician, amateur philosopher and historian, and all around Cool Guy Michael Flynn has done the bulk of the work for me. Recently, he wrote a piece on the "ladder of inference". You should go read it. No, seriously. Go. I'll wait.
All done? To summarize for those too lazy to read, the ladder of inference is basically the process we mentally apply whenever presented with facts. It goes like this:
- I observe objectively.
- I select data from what I observer.
- I add meaning to what I have selected.
- I make assumptions based on the meaning I have added.
- I draw conclusions, which prompt feelings.
- I adopt beliefs about the world.
- I take action based on my beliefs and feelings.
Now, there is a loop, called the Reflexive Loop from step 6 to step 2: our beliefs influence what data we select from our observations. This is why two people can be presented with the same set of data and draw completely different conclusions about it. Based on their beliefs, developed from previous experiences, people will notice different things, infer different meanings, and make different assumptions from the same things.
For our purposes, I will refer to these beliefs that influence our observations and actions as "premises". These are not, of course, philosophical premises in the sense of "first principles", since they are based on prior experiences. But, for a given situation, they are the things we assume are a given, and not topics for discussion.