The phrase "flying by the seat of your pants" originates from aviation history when pilots had to rely on their instincts and physical sensations rather than instruments to fly planes. Before the development of modern flight instruments, pilots had to interpret the movements of the aircraft through their body contact with the seat, hence the expression. It conveys a sense of operating purely on instinct or intuition in a challenging situation.
Or, as followers of Jesus say:
We walk by faith, not by sight.
[–]Bitch-Im-a-cow 2 insightful - 2 fun2 insightful - 1 fun3 insightful - 1 fun3 insightful - 2 fun - (3 children)
[–]In-the-clouds[S] 2 insightful - 1 fun2 insightful - 0 fun3 insightful - 0 fun3 insightful - 1 fun - (2 children)
[–]Bitch-Im-a-cow 2 insightful - 1 fun2 insightful - 0 fun3 insightful - 0 fun3 insightful - 1 fun - (1 child)
[–]In-the-clouds[S] 3 insightful - 1 fun3 insightful - 0 fun4 insightful - 0 fun4 insightful - 1 fun - (0 children)
[–]thomastheglassexpert 1 insightful - 1 fun1 insightful - 0 fun2 insightful - 0 fun2 insightful - 1 fun - (0 children)