The main driver for Chez-based Racket was to have a Scheme runtime. Performance was an afterthought, but was anticipated due to the excellent performance of Che

The main driver for Chez-based Racket was to have a Scheme runtime. Performance was an afterthought, but was anticipated due to the excellent performance of Chez and the superior expertise of many Racketeers with Scheme compared to C. The macro expander was a particularly desirable part to have in Scheme, as it since allowed more people to contribute to this complex but crucial component.