Unfortunately, I'm a very good example of the latter scenario, which I quickly learned from and is a mistake I hope that no one else makes. (travelcodex.com)
Sadly, Deathtrap Dungeon is a really good example of the latter. (old-games.com)
Tattfoo Tan's Nature Matching System comes to mind as an exceptionally good example of the latter (see image above). (magazine.art21.org)