So are you saying that most pepole most of the time don't behave in a consistant way? Persons behaving in a manner which is inconsistant manner with their normal behaviour would be an exceptioon rather than the norm.
Not most of the time.
So in the same situtation or broadly similiar situation that a person has come across before they are likely to behave in a consistant manner. I.e. do the same thing they did before if it worked last time. If it didn't work last time they would try something different.
Sometimes. In other cases, they will experience some personal problem and act irrationally because of that.
But most people tend to hold the same principals, they wouldn't tend to fluctuate that much. I.e if you believe the law should be upheld, next week you can't say lets ingore the law, then the following day/week etc.. to be the law must be up held, then back to when I do it it's not against the law.
They do. It's just that behavior isn't consistent. For example, someone will be in pain due to the death of a loved one and because of that may act irrationally in certain cases.
It's not a matter of changing principles but being affected emotionally by various experiences, and that in turn affecting behavior.