oh boy.. so many thing I´d like to know..

one infinite loop would be

as example: why is a dog called a "dog"?.. some may say.. because God or Adam or someone called them that.. yeah.. but why?.. and there you can have an infinite set of why´s...

another would be how are certain people capable of inventing stuff.. how do they get the idea that putting this and that together will work and do certain thing...

also... why do we have "spare" parts.. I mean we can live without certain organs if need be to get them removed.. so why are they there in the first place if we can work ok without them?