If some of you know the hole... what do you think of the ruins of that old farm house foundation in the middle of a FW at one of Hurdzan's courses (Devils Paintbrush 17th)? You may have seen the photo as it is featured in Dr. Hurdzans Architecture book. Frankly, I'd call it needless quirk. They left the old stone foundation, exactly in the middle of play, yet I assume they had the ability to take it out, place a bunker if they wanted a mid FW hazard, or a tall grass depression, etc. Is that an example of quirk, purposefully left, not necessary as to efficiency of construction, and contrary to conventional golf sense in that it forces a drop outside the foundation if you get in it? Sure, if it were a water hazard, it would be a drop as well. But, wouldn't a man made water hazard similarly placed in the middle of an LZ or separating two LZs as the foundation seems to do, also be a quirk, not necessary to conventional golf play?
What about "run rigs". They existed prior to the golf course and are a compromise with the land that previously existed, and are somewhat historical to the agricultural history of the land. They don't really exact an unplayable lie penalty, just a quirky little series of nebulous lies. I think they are natural and and example of good quirk.
Finally on the man made side; what about the convex or inverted bunker on the right side green approach to #5 at Wild Horse. That is a lacy bunker of grass and sand, and guards the right side of the punchbowl green, rendering the green surface blind on the right, with clear visability to the left side past the inverted bunker. It was placed there purposefully by the designers, extracts a bit of a playing penalty if you come up short of flying it to the punchbowl, yet is recoverable for an up and down if played well, or worse if not played well. Frankly, that is what I believe is good manufactured quirk. It is different, forces a certain style of shot making due to its unusual placement and designed style, yet doesn't fly in the face of playing the game forward.