Quote:
Originally Posted by johndallman
The GURPS skill system is a compromise between reflecting how education and training actually work, and providing numbers for characters to roll against in a manner that makes for a fair game. These are not fully compatible objectives. Physiology skill is definitely a symptom of the first objective.
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Were it up to me, Physiology would be reduced down to a "Anatomical familiarity" perk. If you have it, you can perform surgery at no penalty, or target the race's vital organs with attacks.
A skill should be something you roll against, ideally with potential modifiers, so it's obvious how someone with skill 10, 15, 18 and 25 differ from one another. Physiology lets you roll, but it's not really clear to me why. Sometimes you remember that Vulcan hearts are located where human livers are, and sometimes you don't? From a gamer's perspective, that makes more sense as "something you know or don't." Hence, perk.