Because I can understand the whole implementation. I am no programmer, but the racket source is somewhere between "magic" and "more magic" to me. I managed to

Because I can understand the whole implementation. I am no programmer, but the racket source is somewhere between "magic" and "more magic" to me. I managed to patch guile to fold equal? to eq? when the comparisons involved literal symbols, chars or fixnums. (Although maybe not in the best way, it still worked). I apparentlynnerd-sniped Andy so he implemented it properly as a part of the expander (I think). That took me less than an hour starting from a cursory understanding of the guile codebase.