If human beings do not face trials, they will not experience the great suffering, or tribulations, that will later make them what they are. Trial and error is a method where every last human being will experience incorrect trials which are usually eliminated until the correct method for a solution is found. When humans try, most of the time, they don't know what the end results will be, but when they do, they try their hardest and do it to the best of their ability. To be successful in life you must first know failure. Life is full of obstacles every day and all human beings have to face things and then endure everything they have been through in their life