According to Sam Stubbs, the worst decision ever by a New Zealand politician was made on 15 December 1975.

Most of us wouldn't know what he was referring to, but few economists would disagree that Robert Muldoon’s decision to cancel the fledgling New Zealand Superannuation Scheme on that day was probably the worst financial decision ever made.

Why? Because had it continued, New Zealand would now be one of the richest countries in the world.

Read the full article on Stuff.