There are instances in which the impossible do exists. People tend to be judgemental in their views and reject the impossible incidents upright. I believe that such view will hinder one from expanding his/her horizon and accept new ideas.
I quote an example. If one was told that human can travel by air more than a century ago, I believe that almost of the people will be laughing and criticising such idea. What happens in the current environment? There are items called aeroplanes which enable people to travel to far-away places within a shorter time. This goes to show that the impossible can happen at any point of time.