Over the years, I've seen DMs throw out the RAW and play detect evil as they feel fits their world. I've even done detect evil one way in one world and another way in a different one, even though both worlds were played at the same time. Note: 'I' in the following arguments do not necessarily indicate the writer of this post.
RAW:
Argument 1: "Evil is evil. Whether you are a monster with the evil subtype, just plain evil monster, evil cleric, or PC whose alignment is evil, your aura is evil. That's why there's a table!"
Argument 2: "No. The 'evil' in the RAW refers to evil descriptors and goes further to spotlight evil outsiders, clerics, etc. If they meant evil to refer to PCs then they would've provided an example."
Non-RAW:
Argument 3: "While I play RAW (argument 1), I adjust it according to intent. A faintly evil guy helping a little ol' lady across the street wont show up as evil - unless, of course, he's doing it so he doesn't get noticed."
Argument 4: "Evil, except for really evil, like outsiders/clerics, means evil intent. So even if a PC is evil then he won't show up unless he's doing something evil."
Argument 5: "Nah, I nerfed detect evil, because I got tired of my players auto-attacking anything that shows up evil. Instead, the 'evil' thing has to actually be doing evil - like killing babies."
I'm sure there are plenty more, but how do YOU do detect evil? Especially if a PC/NPC is evil.
RAW:
Argument 1: "Evil is evil. Whether you are a monster with the evil subtype, just plain evil monster, evil cleric, or PC whose alignment is evil, your aura is evil. That's why there's a table!"
Argument 2: "No. The 'evil' in the RAW refers to evil descriptors and goes further to spotlight evil outsiders, clerics, etc. If they meant evil to refer to PCs then they would've provided an example."
Non-RAW:
Argument 3: "While I play RAW (argument 1), I adjust it according to intent. A faintly evil guy helping a little ol' lady across the street wont show up as evil - unless, of course, he's doing it so he doesn't get noticed."
Argument 4: "Evil, except for really evil, like outsiders/clerics, means evil intent. So even if a PC is evil then he won't show up unless he's doing something evil."
Argument 5: "Nah, I nerfed detect evil, because I got tired of my players auto-attacking anything that shows up evil. Instead, the 'evil' thing has to actually be doing evil - like killing babies."
I'm sure there are plenty more, but how do YOU do detect evil? Especially if a PC/NPC is evil.