here's a dangerous superstition....

apparently in china some people have a habit of tossing coins into jet intakes for "luck"... i don't think bent or broken turbine blades will be very "lucky" for that flight...
https://www.foxnews.com/travel/airline-passenger-fined-tossing-coins-plane-engine-luck

No more idiotic than those throwing coins into the fontanas (not only in Italy) or locking padlocks on the sides of bridges (heard of a small one that collapsed).

But yes, a jet intake means danger.

when i was in the Army, we were being sent to Ft Irwin for war games. we got off the plane at an air force base, but our trucks and buses were late, so while we were waiting they had us do a "FOD walk" (Foreign Object Damage) along the section of runway our plane was on. apparently even small pebbles, small nuts and screws, etc... getting sucked up off the runway into an engine can be disastrous...

unclejed613 said:

apparently even small pebbles, small nuts and screws, etc... getting sucked up off the runway into an engine can be disastrous...

Click to expand...

And also in other ways.
It was only a stray fragment of sheet metal on a runway, damaging a tyre, that caused the fatal Concorde accident in 2000.

Stepping over a broom. My wife noticed i was about to step over a fallen broom and she pushed me over the end table and I smacked my head against the dresser. Bad luck indeed.