Read the excerpt from A Black Hole Is NOT a Hole by Carolyn Cinami DeCristofano.

The scientist who forgot to eat his lunch was busy cooking up a whole new way of thinking about gravity. He was a radical smarty-pants—somebody with a wild imagination. Someone whose brain could surprise even himself.

Albert Einstein didn't mean to turn the universe upside-down on everyone. He didn't plan on leading others to discover black holes. At first, all he set out to do was think about motion, along with a few other related ideas. But almost before he knew it, he had suddenly made our dependable old universe seem strange and new.

Which detail would be best to include in a summary of the excerpt?

the scientist who forgot to eat his lunch
a new way of thinking about gravity
whole radical smarty-pants
a few other related ideas