When?

Is there any sign before it happens? How long does it last craked? How to check its resistance? Or does it not matter if it's broken because it can be repaired? How to know if it's coming to an irreversible stage? Can be used any type of glue? How to know if the paste is the correct one or it will cause an allergic reaction? What if the smallest piece gets lost? What if the injury is still infected after being cleaned every day with oxygenated water? It can be used then as if nothing has happened? What about getting broken at the same place? What about those injuries on the opposite side? What if the glue that I need is made thousands of kilometres far from here? What if I can not afford its treatment? What if it doesn't exist and I have to invent it? What if I decide that there is no cure? How long should I wait for that judgement? Is it my decision or can I share it? Could I accept it after its downfall? Can I give it another use even when I perfectly know for what it was made for? How long for the grief? How to organize the funeral? Can I arrange better a party with music until the sunrise?

Because I don't know when but it will collapse. Because I don't know when the answers will come but I'm going to ask everything. Because I don't know when but will definitely keep flying.