Inexperience at one end of the spectrum and over-confidence at the other. Susan's "lack of good judgment" works at either end.

As for Shadow_oo00's experience, I've got no problem with his adventure, looked like a learning experience that you need to enjoy first-hand. There may have been a bit of over-confidence, but as stated they were prepared to stay the night so no harm. You aren't stuck out overnight when you decide to stop and make camp. Sometimes that's good judgment and experience.