Joachim Lambek

...

the way it was invented, but, uh, he had this, I mean, was, was due to Lambek, this observation, uh, uh, that, that this is how lambda calculus, i.e., type theory, should have been invented, which is exactly what you're saying, uh-

And when I, when I went to, um, Strathclyde and set up the Mathematically Structured Programming group, that's why we called it MSP, because-

Mm-hmm