Do not laugh at the class , but rather at an instance of that class . Banana Mand 6 kuj 10 . pngEven if 20 forms of time travel have been deemed impossible , it does not at all rule out time travel . Why ? Because you are restricting yourself by ridiculing the whole class . There are many more realistic instances . And these will bring benefits to the economy and thus you . Or another reason do you want to see a less interesting future do you want to lose all the possible conveniences ? Do you want this ' shun the whole class ' behaviour to significantly spread ? To allow people with possibly good ideas to be shunned ? Do you want this behaviour to spread to the common people too ? Do you want to be personally shunned in this manner too ? I just had to be , man .