…or maybe better termed confusion over pressure settings, altitude, and weather.
Most pilots know the memory aid “high to low, hot to cold, look out below”. This reminds us that without local altimeter settings or understanding of temperatures, we may not be where we think we are altitude-wise. Many fewer pilots seem to understand the following situation:
KSBD 192350Z 25013G18KT 7SM SKC 34/11 A2988 KL35 200035Z AUTO 06007KT 10SM CLR 22/M01 A3028