Historically, the bulk of the human race has never known a classroom, let alone a cloister or an ivory tower, or met up with teachers empowered by letters after their names.
( Historically ( ( , ( ( ( ( the bulk ) ( of ( the ( human race ) ) ) ) ( ( has never ) ( known ( a classroom ) ) ) ) , ) ) ( ( ( ( ( let ( ( ( alone ( a cloister ) ) or ) ( an ( ivory tower ) ) ) ) , ) or ) ( ( ( met up ) ( with ( teachers ( empowered ( by letters ) ) ) ) ) ( after ( their names ) ) ) ) . ) ) )
(ROOT (S (NP (NNP Historically)) (PRN (, ,) (S (NP (NP (DT the) (NN bulk)) (PP (IN of) (NP (DT the) (JJ human) (NN race)))) (VP (VBZ has) (ADVP (RB never)) (VP (VBN known) (NP (DT a) (NN classroom))))) (, ,)) (VP (VP (VBD let) (NP (NP (RB alone) (DT a) (NN cloister)) (CC or) (NP (DT an) (JJ ivory) (NN tower)))) (, ,) (CC or) (VP (VBD met) (PRT (RP up)) (PP (IN with) (NP (NP (NNS teachers)) (VP (VBN empowered) (PP (IN by) (NP (NNS letters)))))) (PP (IN after) (NP (PRP$ their) (NNS names))))) (. .)))
Throughout history, most human beings have had no experience with formal education.
( ( Throughout history ) ( , ( ( most ( human beings ) ) ( ( have ( had ( ( no experience ) ( with ( formal education ) ) ) ) ) . ) ) ) )
(ROOT (S (PP (IN Throughout) (NP (NN history))) (, ,) (NP (RBS most) (JJ human) (NNS beings)) (VP (VBP have) (VP (VBN had) (NP (NP (DT no) (NN experience)) (PP (IN with) (NP (JJ formal) (NN education)))))) (. .)))