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