when instruments were first introduced to planes, most people thought that something caused all instruments to malfunction like crazy as soon as they entered cl

when instruments were first introduced to planes, most people thought that something caused all instruments to malfunction like crazy as soon as they entered clouds due to the ghost spatial effects the pilots assumed were true ("I can't be turning, I feel like I'm going in a straight line!" or "I can't be going straight, I feel like I'm turning"). If I remember correctly, the average lifetime of a non-instrument trained pilot in instrument only conditions is measured in seconds, because these ghosting effects are so strong.