nprofile1qy2hwumn8ghj7un9d3shjtnyd968gmewwp6kyqpqjd874v63430gng67kpw5m597f34dr9vr0yhkp8dkmnma8208raysj9xuzd (nprofile…xuzd) I'm TAing a proof theory course that uses the book "Structural Proof Theory" and sharing a lot of these feelings at the moment... How can a book published 16 years ago already be so outdated‽
It also does this weird thing where the weight of a formula is defined as its symbol count except that ⊥ counts for 0, so when doing induction on the weight of a formula you have to special case nonsense like ⊥ → ⊥... Way to invent complexity where there is none.