Mike Crook writes: Re. "Peter Garrett and the perpetual present of politics" (Friday, item 1). With the cessation of the Insulation Program by Peter Garrett, it is probably a good time to have a look at other methods of service delivery for infrastructure projects other than the one which seems to have failed so dismally in this case. We need also to enter into a debate about the unchallenged mantra "private is more efficient than public".