>>707878Excuse me?
Type theory is the future of mathematics and computer programming. In 50-100 years, we all are going to be using programming languages with advanced dependent types founded on type theory.
Sure Russell's type theory is only tangentially related to Per Martin-Löf's, but it was an important inspiration.
>>707897and he laid the ground work for what would eventually become today's type theory, where you can prove that `1+1=2` with inductive and equality types in one page (literally one line in modern proof assistants).