Lastly, we do need luck sometimes to further our scientific research. In this sort of situation, only hard working is probably not enough. Let us say, although Edison had already experimented more than one thousand
kinks of materials which are not suitable to use as a lamp wick , he still had not found the right material. Then luck came and assisted him. Without the critical luck, we may still worry about the longevity of the light.
A LITTLE MISTAKE~
