Mixed conditional clause type 1-3?
I came across the following conditional clause while studying a grammar book published by Oxford: "If you know London so well, you shouldn't have got so hopelessly lost." The writer of the book has only briefly mentioned that this is a mixed conditional clause (type 1-3) without giving any further explanation in what situation it can be used. I'm already familiar with two other types of mixed conditional clauses (type 2-3 and type 3-2) and have no problem understanding them but this one is causing me some trouble. I need your help. Thanks.