Truth be told, you can intercept the reader in Common Lisp, too, and here it actually makes some sense since the 2D value is immediately visually grokkable as a

Truth be told, you can intercept the reader in Common Lisp, too, and here it actually makes some sense since the 2D value is immediately visually grokkable as an ASCII-art table. The proposed 2D sexpr notation does not have this.