According to Benjamin Franklin, nothing is certain but death and taxes, neither of which sound appealing. What optimism does certainty give then? Certainty correlates with inflexibility and stubbornness. Being certain is almost always naïve, because without doubt, the world would be black and white, yes or no. We need doubt to check results and to confirm integrity. Although doubt does define as a lack of confidence, doubt should be considered a helpful tool in determining the best outcome for a situation instead of a hindrance or excuse in accomplishing something. Trial and error are key components to any experiment. One way to become certain of something is through trial and error. It’s pointless to experiment without doubt, because why would