Brickies outdo themselves

As I mentioned yesterday we have a pair of uninformed brickies doing some work at my house currently. They have to build 3 normal height walls for a total floor length of 13m. They've so far taken 2 full days (a brickie's full day is 7 hours) to finish 40% of the work.

So lets see. That is 5.2m of wall in 2 days by 2 brickies, or 1.3m of wall in an entire day for 1 brickie. Is it just me, or does this seem a bit slow to you? These guys obviously had a lego deprived childhood. I would hate to see them building an entire house.