confused, page-13

hows this for selective hearing:

dave goes:

immigration is expected to grow to 200,000 per year (implying it isn't yet)
And we built just under 150,000 homes in past year...sounds like enough...

seer goes:

Dave old son you have missed a few things in your sum ,because of lack of building (????????) there is a shortage this has to be taken up !!

am i only one thinking that whatever equation dave mentioned seer would've replied with: shortage !!!!

(spruik spruik spruik...what da?)