Has the level of difficulty in mathematics increased over time? Are we less intelligent than our predecessors?
Mathematics as a body of knowledge has expanded exponentially since the beginning of the 20th century. Historian of mathematics, E. T. Bell said that Henri Poincaré (1854–1912) was probably the last mathematician who understood all of the fields of mathematics during his time. Since then, mathematics, developed in academia and in industry has exploded in …