Another interesting news day for fiscal policy/supply-side topic

On Radio 4 this am a commentator interviewed to talk about the Chancellor's fiscal rules proposals, while broadly agreeing the new rules are good, made the comment that "with the crumbling state of our infrastructure, and with the government's ability to borrow at 0% in real terms over 50 years, [can it?] I wish they would borrow to invest in the future."

Some time later there was a news item describing how the Public Accounts Committee [what's that?] chaired by Margaret Hodge had questioned the value for money of the whole HS2 project, pointing out that the estimated cost of the the first stage had already risen from £17bn to £21bn over the last few months.

In addition I note a headline in the Daily Telegraph:

Whitehall's quickfire £1bn spree to spend surplus in foreign aid budget

                       

"MPs say the fact that taxpayer funds were spent so quickly raised serious questions about whether value for money was achieved..."

Anyone who wants to achieve a B or higher should be all over this sort of material; it is the second most effective way of showing appropriate knowledge to the examiner. What is the first?