A "prima facie" duty is
A "prima facie" duty is
You really missed the point!
A "prima facie" duty is
Huh? Even my goldfish knew that this guess was wrong.
A "prima facie" duty is
The two are very different. A prima facie duty holds in most cases, but not under some extenuating circumstances.
A "prima facie" duty is
A prima facie principle might be true.
A prima facie duty is one that holds if other things are equal. So "at first glance" ("prima facie") an act of keeping a promise seems to be your duty, but at second glance (after we look at conflicting duties) it might not be.
A "prima facie" duty is
Ima Rossian gives the example of promise keeping. The fact that you made a promise tends in itself to make it a duty to fulfill the promise. This can sometimes be overridden by other factors. However it isn't automatically overridden if some other action would have better consequences.
A prima facie duty is a factor that tends in itself to make something our duty but can sometimes be overridden by other factors.