Designers, listen: If you want a positive experience for your players with randomised content, create failsafes so they are always rewarded, even if their luck really sucks.
It surely can't be that hard to create a diminishing non-success marker that hits 0% after n tries.
In other aviatory news, I saw a flying go-cart this weekend. He circled above me a few times while I took the puppies for a walk before flying off to whatever fate befell him*.
-Anthony
* In my head I imagined he had a dozen moneybags of loot, twirling his luxurious moustache and cackling wildly. He would then land his kart-plane on a secret runway where his crab-walking sidekick would greet him and be left to haul the moneybags away into their secret base, waiting to be liberated by some derring do-gooder with an ironed suit and fancy watch.
such is my ambassador