What does the forgetting curve tell you about the amount of information you may forget if you do not think about that information within 24 hours of listening your recall reamain the same as when you left the lecture
your recall will drop by ninety-nine percent
your recall will drop by fiffty to eight percent
your recall will drop by fifteen to twenty percent

answer: i would say he was very determined and persistent in overcoming obstacles.

explanation:   "the magician of menlo park" as he was called, liked to tell an incident that happened when he was 8 years old and came back home crying after attending school for three months because his teacher called him "sterile and unproductive". from nowadays perspective, we can say that thomas alva edison was one of the most persistent and determined man that has ever existed. when edison was 14, he contracted scarlet fever. the effect of the fever, as well as a blow to the head by an angry train conductor, caused edison to become completely deaf in his left ear, and 80-percent deaf in the other. so as you can see he had to struggle to not so many minor issues but he always succeeded.