In the science of probability impossible is the event that has zero probability of happening, but this doesn't mean that the event does not exist!.
what happens in life is that we tend to put lower standards, less dreams and objectives that need much less efforts, we are lazy, we hate to work, we don't want to move a muscle and still we want to have all the attention, credit and love of the whole world.... well this is impossible!.
when we accomplish something that is impossible is that you change the concept or the environment of the event, Example : men can't fly... man created planes that fly, planes can carry men when they fly, but still man didn't fly".
Sadly one of the impossible events I have is to do the hobbies I used to do 2 years ago!.
and you what are your impossibles?
