UK’s Withdrawal from the EU

The right hon. Gentleman says that a deal can still be negotiated. Given that one of the reasons for the backstop is the admission that at the moment there is no off-the-shelf technological solution that can provide a working mechanism to have no border between Northern Ireland and Ireland, how is a solution going to be found over the next 40-odd days that would allow the backstop to be removed? It is impossible, is it not?